/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:13:00,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:13:00,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:13:00,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:13:00,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:13:00,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:13:00,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:13:00,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:13:00,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:13:00,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:13:00,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:13:00,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:13:00,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:13:00,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:13:00,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:13:00,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:13:00,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:13:00,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:13:00,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:13:00,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:13:00,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:13:00,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:13:00,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:13:00,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:13:00,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:13:00,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:13:00,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:13:00,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:13:00,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:13:00,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:13:00,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:13:00,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:13:00,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:13:00,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:13:00,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:13:00,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:13:00,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:13:00,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:13:00,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:13:00,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:13:00,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:13:00,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:13:00,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:13:00,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:13:00,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:13:00,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:13:00,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:13:00,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:13:00,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:13:00,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:13:00,761 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:13:00,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:13:00,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:13:00,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:13:00,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:13:00,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:13:00,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:13:00,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:13:00,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:13:00,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:13:00,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:13:00,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:13:00,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:13:00,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:13:00,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:13:00,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:13:00,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:13:00,765 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:13:00,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:13:00,766 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:13:00,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:13:00,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:13:01,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:13:01,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:13:01,020 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:13:01,024 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:13:01,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-01-18 12:13:01,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6b1ff32/f30251496cc84947bac7c879fe16768f/FLAG315d201d9 [2022-01-18 12:13:01,386 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:13:01,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2022-01-18 12:13:01,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6b1ff32/f30251496cc84947bac7c879fe16768f/FLAG315d201d9 [2022-01-18 12:13:01,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6b1ff32/f30251496cc84947bac7c879fe16768f [2022-01-18 12:13:01,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:13:01,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:13:01,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:13:01,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:13:01,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:13:01,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:13:01" (1/1) ... [2022-01-18 12:13:01,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9cb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:01, skipping insertion in model container [2022-01-18 12:13:01,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:13:01" (1/1) ... [2022-01-18 12:13:01,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:13:01,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:13:02,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c[1991,2004] [2022-01-18 12:13:02,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:13:02,015 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:13:02,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c[1991,2004] [2022-01-18 12:13:02,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:13:02,040 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:13:02,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02 WrapperNode [2022-01-18 12:13:02,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:13:02,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:13:02,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:13:02,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:13:02,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,068 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-01-18 12:13:02,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:13:02,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:13:02,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:13:02,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:13:02,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:13:02,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:13:02,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:13:02,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:13:02,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (1/1) ... [2022-01-18 12:13:02,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:13:02,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:02,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 12:13:02,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 12:13:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:13:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:13:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:13:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:13:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:13:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:13:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:13:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:13:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:13:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:13:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:13:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:13:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:13:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:13:02,179 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:13:02,286 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:13:02,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:13:02,441 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:13:02,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:13:02,477 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 12:13:02,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:13:02 BoogieIcfgContainer [2022-01-18 12:13:02,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:13:02,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:13:02,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:13:02,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:13:02,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:13:01" (1/3) ... [2022-01-18 12:13:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feda977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:13:02, skipping insertion in model container [2022-01-18 12:13:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:13:02" (2/3) ... [2022-01-18 12:13:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feda977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:13:02, skipping insertion in model container [2022-01-18 12:13:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:13:02" (3/3) ... [2022-01-18 12:13:02,486 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2022-01-18 12:13:02,491 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:13:02,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:13:02,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:13:02,491 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:13:02,521 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,521 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,522 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,522 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,522 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,523 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,536 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:13:02,540 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:13:02,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:13:02,581 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:13:02,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:13:02,594 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 77 transitions, 170 flow [2022-01-18 12:13:02,656 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-18 12:13:02,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:02,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:02,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 366020055, now seen corresponding path program 1 times [2022-01-18 12:13:02,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099054015] [2022-01-18 12:13:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:02,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:02,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:02,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099054015] [2022-01-18 12:13:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099054015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:02,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:13:02,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402552208] [2022-01-18 12:13:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:02,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:13:02,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:13:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:13:02,860 INFO L87 Difference]: Start difference. First operand has 438 states, 437 states have (on average 2.6727688787185353) internal successors, (1168), 437 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:02,914 INFO L93 Difference]: Finished difference Result 438 states and 1086 transitions. [2022-01-18 12:13:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:13:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-18 12:13:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:02,930 INFO L225 Difference]: With dead ends: 438 [2022-01-18 12:13:02,930 INFO L226 Difference]: Without dead ends: 437 [2022-01-18 12:13:02,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:13:02,935 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:02,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-18 12:13:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-01-18 12:13:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 2.488532110091743) internal successors, (1085), 436 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1085 transitions. [2022-01-18 12:13:02,999 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1085 transitions. Word has length 52 [2022-01-18 12:13:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:03,000 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 1085 transitions. [2022-01-18 12:13:03,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1085 transitions. [2022-01-18 12:13:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-18 12:13:03,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:03,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:03,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:13:03,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 613712183, now seen corresponding path program 1 times [2022-01-18 12:13:03,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:03,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606850263] [2022-01-18 12:13:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:03,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:03,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:03,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606850263] [2022-01-18 12:13:03,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606850263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:03,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:03,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:03,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058455270] [2022-01-18 12:13:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:03,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:03,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:03,171 INFO L87 Difference]: Start difference. First operand 437 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:03,252 INFO L93 Difference]: Finished difference Result 599 states and 1457 transitions. [2022-01-18 12:13:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-18 12:13:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:03,257 INFO L225 Difference]: With dead ends: 599 [2022-01-18 12:13:03,257 INFO L226 Difference]: Without dead ends: 485 [2022-01-18 12:13:03,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:13:03,259 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:03,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 201 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-18 12:13:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 473. [2022-01-18 12:13:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 2.472457627118644) internal successors, (1167), 472 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1167 transitions. [2022-01-18 12:13:03,294 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1167 transitions. Word has length 52 [2022-01-18 12:13:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:03,295 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1167 transitions. [2022-01-18 12:13:03,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1167 transitions. [2022-01-18 12:13:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:03,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:03,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:03,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:13:03,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash -60987315, now seen corresponding path program 1 times [2022-01-18 12:13:03,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:03,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495785664] [2022-01-18 12:13:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:03,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:03,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:03,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495785664] [2022-01-18 12:13:03,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495785664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:03,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:03,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:03,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060272373] [2022-01-18 12:13:03,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:03,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:03,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:03,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:03,464 INFO L87 Difference]: Start difference. First operand 473 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:03,561 INFO L93 Difference]: Finished difference Result 609 states and 1524 transitions. [2022-01-18 12:13:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:03,567 INFO L225 Difference]: With dead ends: 609 [2022-01-18 12:13:03,567 INFO L226 Difference]: Without dead ends: 609 [2022-01-18 12:13:03,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:03,569 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 49 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:03,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 207 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-18 12:13:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 505. [2022-01-18 12:13:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 2.4722222222222223) internal successors, (1246), 504 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1246 transitions. [2022-01-18 12:13:03,599 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1246 transitions. Word has length 57 [2022-01-18 12:13:03,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:03,601 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 1246 transitions. [2022-01-18 12:13:03,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1246 transitions. [2022-01-18 12:13:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:03,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:03,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:03,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:13:03,606 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1396697041, now seen corresponding path program 2 times [2022-01-18 12:13:03,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:03,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766217822] [2022-01-18 12:13:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:03,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:03,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:03,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766217822] [2022-01-18 12:13:03,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766217822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:03,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:13:03,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138959012] [2022-01-18 12:13:03,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:13:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:13:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:03,776 INFO L87 Difference]: Start difference. First operand 505 states and 1246 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:03,860 INFO L93 Difference]: Finished difference Result 749 states and 1900 transitions. [2022-01-18 12:13:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:13:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:03,865 INFO L225 Difference]: With dead ends: 749 [2022-01-18 12:13:03,865 INFO L226 Difference]: Without dead ends: 749 [2022-01-18 12:13:03,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:03,867 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 64 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:03,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 293 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-01-18 12:13:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 532. [2022-01-18 12:13:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.48210922787194) internal successors, (1318), 531 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1318 transitions. [2022-01-18 12:13:03,886 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1318 transitions. Word has length 57 [2022-01-18 12:13:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:03,887 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1318 transitions. [2022-01-18 12:13:03,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1318 transitions. [2022-01-18 12:13:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:03,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:03,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:03,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:13:03,891 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash 467447237, now seen corresponding path program 3 times [2022-01-18 12:13:03,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571018262] [2022-01-18 12:13:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:03,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:03,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:03,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571018262] [2022-01-18 12:13:03,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571018262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:03,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:03,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:13:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627840409] [2022-01-18 12:13:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:13:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:13:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:03,960 INFO L87 Difference]: Start difference. First operand 532 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,027 INFO L93 Difference]: Finished difference Result 784 states and 1994 transitions. [2022-01-18 12:13:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:13:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,031 INFO L225 Difference]: With dead ends: 784 [2022-01-18 12:13:04,031 INFO L226 Difference]: Without dead ends: 784 [2022-01-18 12:13:04,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:13:04,033 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 233 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-01-18 12:13:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 512. [2022-01-18 12:13:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.4892367906066535) internal successors, (1272), 511 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1272 transitions. [2022-01-18 12:13:04,050 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1272 transitions. Word has length 57 [2022-01-18 12:13:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,050 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1272 transitions. [2022-01-18 12:13:04,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1272 transitions. [2022-01-18 12:13:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:13:04,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 698420085, now seen corresponding path program 4 times [2022-01-18 12:13:04,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051687699] [2022-01-18 12:13:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:04,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:04,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051687699] [2022-01-18 12:13:04,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051687699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:04,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:04,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:04,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816560299] [2022-01-18 12:13:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:04,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:04,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:04,114 INFO L87 Difference]: Start difference. First operand 512 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,160 INFO L93 Difference]: Finished difference Result 712 states and 1789 transitions. [2022-01-18 12:13:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,165 INFO L225 Difference]: With dead ends: 712 [2022-01-18 12:13:04,165 INFO L226 Difference]: Without dead ends: 700 [2022-01-18 12:13:04,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:04,166 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 150 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-01-18 12:13:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 516. [2022-01-18 12:13:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-01-18 12:13:04,183 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-01-18 12:13:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,184 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-01-18 12:13:04,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-01-18 12:13:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:13:04,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1462366689, now seen corresponding path program 5 times [2022-01-18 12:13:04,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442637960] [2022-01-18 12:13:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:04,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442637960] [2022-01-18 12:13:04,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442637960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:04,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:04,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:04,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180433446] [2022-01-18 12:13:04,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:04,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:04,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:04,248 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,356 INFO L93 Difference]: Finished difference Result 664 states and 1669 transitions. [2022-01-18 12:13:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,361 INFO L225 Difference]: With dead ends: 664 [2022-01-18 12:13:04,361 INFO L226 Difference]: Without dead ends: 664 [2022-01-18 12:13:04,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:04,366 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-01-18 12:13:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 528. [2022-01-18 12:13:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.4971537001897532) internal successors, (1316), 527 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1316 transitions. [2022-01-18 12:13:04,390 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1316 transitions. Word has length 57 [2022-01-18 12:13:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,391 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1316 transitions. [2022-01-18 12:13:04,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1316 transitions. [2022-01-18 12:13:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:13:04,394 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 817865927, now seen corresponding path program 6 times [2022-01-18 12:13:04,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586973282] [2022-01-18 12:13:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:04,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:04,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586973282] [2022-01-18 12:13:04,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586973282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:04,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:04,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:13:04,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738247797] [2022-01-18 12:13:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:04,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:13:04,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:13:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:04,540 INFO L87 Difference]: Start difference. First operand 528 states and 1316 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,609 INFO L93 Difference]: Finished difference Result 804 states and 2045 transitions. [2022-01-18 12:13:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:13:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,613 INFO L225 Difference]: With dead ends: 804 [2022-01-18 12:13:04,622 INFO L226 Difference]: Without dead ends: 804 [2022-01-18 12:13:04,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:04,622 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 207 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-01-18 12:13:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 516. [2022-01-18 12:13:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.49126213592233) internal successors, (1283), 515 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1283 transitions. [2022-01-18 12:13:04,650 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1283 transitions. Word has length 57 [2022-01-18 12:13:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,651 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1283 transitions. [2022-01-18 12:13:04,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1283 transitions. [2022-01-18 12:13:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 12:13:04,657 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1733147865, now seen corresponding path program 7 times [2022-01-18 12:13:04,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754980801] [2022-01-18 12:13:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:04,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:04,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754980801] [2022-01-18 12:13:04,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754980801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:04,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:04,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:04,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353026573] [2022-01-18 12:13:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:04,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:04,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:04,740 INFO L87 Difference]: Start difference. First operand 516 states and 1283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,800 INFO L93 Difference]: Finished difference Result 782 states and 1967 transitions. [2022-01-18 12:13:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:13:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,804 INFO L225 Difference]: With dead ends: 782 [2022-01-18 12:13:04,804 INFO L226 Difference]: Without dead ends: 758 [2022-01-18 12:13:04,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:13:04,807 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 64 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 211 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-01-18 12:13:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 504. [2022-01-18 12:13:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.485089463220676) internal successors, (1250), 503 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1250 transitions. [2022-01-18 12:13:04,822 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1250 transitions. Word has length 57 [2022-01-18 12:13:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,823 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1250 transitions. [2022-01-18 12:13:04,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1250 transitions. [2022-01-18 12:13:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 12:13:04,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 534186475, now seen corresponding path program 8 times [2022-01-18 12:13:04,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346098122] [2022-01-18 12:13:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:04,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346098122] [2022-01-18 12:13:04,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346098122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:04,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753495596] [2022-01-18 12:13:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:04,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:04,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:04,891 INFO L87 Difference]: Start difference. First operand 504 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,962 INFO L93 Difference]: Finished difference Result 834 states and 2102 transitions. [2022-01-18 12:13:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,966 INFO L225 Difference]: With dead ends: 834 [2022-01-18 12:13:04,967 INFO L226 Difference]: Without dead ends: 822 [2022-01-18 12:13:04,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:04,968 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 44 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 238 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-01-18 12:13:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 492. [2022-01-18 12:13:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.478615071283096) internal successors, (1217), 491 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1217 transitions. [2022-01-18 12:13:04,982 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1217 transitions. Word has length 57 [2022-01-18 12:13:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,982 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1217 transitions. [2022-01-18 12:13:04,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1217 transitions. [2022-01-18 12:13:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:04,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 12:13:04,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1298133079, now seen corresponding path program 9 times [2022-01-18 12:13:04,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426472227] [2022-01-18 12:13:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426472227] [2022-01-18 12:13:05,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426472227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:05,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:05,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:13:05,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222338778] [2022-01-18 12:13:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:13:05,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:13:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:05,048 INFO L87 Difference]: Start difference. First operand 492 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:05,102 INFO L93 Difference]: Finished difference Result 790 states and 1989 transitions. [2022-01-18 12:13:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:13:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:05,106 INFO L225 Difference]: With dead ends: 790 [2022-01-18 12:13:05,106 INFO L226 Difference]: Without dead ends: 790 [2022-01-18 12:13:05,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:13:05,107 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 38 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:05,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 198 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-01-18 12:13:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 500. [2022-01-18 12:13:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 2.4749498997995993) internal successors, (1235), 499 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1235 transitions. [2022-01-18 12:13:05,121 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1235 transitions. Word has length 57 [2022-01-18 12:13:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:05,121 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1235 transitions. [2022-01-18 12:13:05,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1235 transitions. [2022-01-18 12:13:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 12:13:05,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:05,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:05,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 12:13:05,123 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 653632317, now seen corresponding path program 10 times [2022-01-18 12:13:05,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094931176] [2022-01-18 12:13:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:05,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:05,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094931176] [2022-01-18 12:13:05,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094931176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:05,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:05,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:13:05,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761117913] [2022-01-18 12:13:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:05,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:13:05,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:13:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:05,199 INFO L87 Difference]: Start difference. First operand 500 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:05,262 INFO L93 Difference]: Finished difference Result 672 states and 1691 transitions. [2022-01-18 12:13:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:13:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-18 12:13:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:05,265 INFO L225 Difference]: With dead ends: 672 [2022-01-18 12:13:05,265 INFO L226 Difference]: Without dead ends: 672 [2022-01-18 12:13:05,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:05,266 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 41 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:05,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 228 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-01-18 12:13:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 484. [2022-01-18 12:13:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 2.4658385093167703) internal successors, (1191), 483 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1191 transitions. [2022-01-18 12:13:05,279 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1191 transitions. Word has length 57 [2022-01-18 12:13:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:05,280 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1191 transitions. [2022-01-18 12:13:05,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1191 transitions. [2022-01-18 12:13:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:13:05,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:05,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:05,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 12:13:05,282 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -786123991, now seen corresponding path program 1 times [2022-01-18 12:13:05,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:05,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439677964] [2022-01-18 12:13:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:05,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:13:05,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439677964] [2022-01-18 12:13:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439677964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:13:05,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:13:05,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:13:05,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388182843] [2022-01-18 12:13:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:13:05,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:13:05,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:13:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:13:05,367 INFO L87 Difference]: Start difference. First operand 484 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:05,414 INFO L93 Difference]: Finished difference Result 1177 states and 2959 transitions. [2022-01-18 12:13:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:13:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:13:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:05,419 INFO L225 Difference]: With dead ends: 1177 [2022-01-18 12:13:05,419 INFO L226 Difference]: Without dead ends: 988 [2022-01-18 12:13:05,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:13:05,419 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 40 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:05,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 343 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:13:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-18 12:13:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 854. [2022-01-18 12:13:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.566236811254396) internal successors, (2189), 853 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2189 transitions. [2022-01-18 12:13:05,439 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2189 transitions. Word has length 62 [2022-01-18 12:13:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:05,440 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2189 transitions. [2022-01-18 12:13:05,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2189 transitions. [2022-01-18 12:13:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:05,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:05,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:05,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 12:13:05,442 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2124186139, now seen corresponding path program 2 times [2022-01-18 12:13:05,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155685622] [2022-01-18 12:13:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:05,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155685622] [2022-01-18 12:13:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155685622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342602371] [2022-01-18 12:13:05,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:05,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:05,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:05,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:13:05,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:05,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:05,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:06,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342602371] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:06,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285607914] [2022-01-18 12:13:06,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:06,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:06,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:06,073 INFO L87 Difference]: Start difference. First operand 854 states and 2189 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:07,171 INFO L93 Difference]: Finished difference Result 4648 states and 12172 transitions. [2022-01-18 12:13:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 12:13:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:07,191 INFO L225 Difference]: With dead ends: 4648 [2022-01-18 12:13:07,192 INFO L226 Difference]: Without dead ends: 4513 [2022-01-18 12:13:07,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=761, Invalid=3145, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 12:13:07,193 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 637 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:07,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1332 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2022-01-18 12:13:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 1669. [2022-01-18 12:13:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 2.723621103117506) internal successors, (4543), 1668 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 4543 transitions. [2022-01-18 12:13:07,257 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 4543 transitions. Word has length 67 [2022-01-18 12:13:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:07,257 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 4543 transitions. [2022-01-18 12:13:07,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 4543 transitions. [2022-01-18 12:13:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:07,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:07,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:07,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:07,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 12:13:07,484 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1705001807, now seen corresponding path program 3 times [2022-01-18 12:13:07,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:07,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186114389] [2022-01-18 12:13:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:07,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:07,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186114389] [2022-01-18 12:13:07,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186114389] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826359215] [2022-01-18 12:13:07,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:07,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:07,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:07,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:07,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:13:07,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:07,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:07,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:07,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:07,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:07,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826359215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:07,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:07,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:07,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757183529] [2022-01-18 12:13:07,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:07,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:07,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:07,969 INFO L87 Difference]: Start difference. First operand 1669 states and 4543 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:08,675 INFO L93 Difference]: Finished difference Result 3683 states and 9665 transitions. [2022-01-18 12:13:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:13:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:08,692 INFO L225 Difference]: With dead ends: 3683 [2022-01-18 12:13:08,692 INFO L226 Difference]: Without dead ends: 3635 [2022-01-18 12:13:08,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=2194, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 12:13:08,694 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 436 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:08,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1556 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2022-01-18 12:13:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 1693. [2022-01-18 12:13:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 2.7145390070921986) internal successors, (4593), 1692 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 4593 transitions. [2022-01-18 12:13:08,754 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 4593 transitions. Word has length 67 [2022-01-18 12:13:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:08,754 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 4593 transitions. [2022-01-18 12:13:08,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 4593 transitions. [2022-01-18 12:13:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:08,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:08,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:08,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:08,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 12:13:08,982 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2041450917, now seen corresponding path program 4 times [2022-01-18 12:13:08,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:08,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499547212] [2022-01-18 12:13:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:08,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:09,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499547212] [2022-01-18 12:13:09,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499547212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:09,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385382274] [2022-01-18 12:13:09,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:09,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:09,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:09,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:13:09,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:09,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:09,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:09,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:09,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385382274] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:09,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:09,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:09,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39089152] [2022-01-18 12:13:09,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:09,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:09,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:09,484 INFO L87 Difference]: Start difference. First operand 1693 states and 4593 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:10,742 INFO L93 Difference]: Finished difference Result 6025 states and 16261 transitions. [2022-01-18 12:13:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 12:13:10,742 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:10,762 INFO L225 Difference]: With dead ends: 6025 [2022-01-18 12:13:10,763 INFO L226 Difference]: Without dead ends: 5950 [2022-01-18 12:13:10,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=994, Invalid=4408, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 12:13:10,765 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 651 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:10,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1415 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2022-01-18 12:13:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 2381. [2022-01-18 12:13:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7668067226890756) internal successors, (6585), 2380 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6585 transitions. [2022-01-18 12:13:10,868 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6585 transitions. Word has length 67 [2022-01-18 12:13:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:10,868 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6585 transitions. [2022-01-18 12:13:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6585 transitions. [2022-01-18 12:13:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:10,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:10,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:10,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:11,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:11,092 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1575671567, now seen corresponding path program 5 times [2022-01-18 12:13:11,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881089154] [2022-01-18 12:13:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:11,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:11,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:11,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881089154] [2022-01-18 12:13:11,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881089154] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:11,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139714291] [2022-01-18 12:13:11,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:11,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:11,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:11,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:11,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:13:11,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:11,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:11,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:11,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:11,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:11,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139714291] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:11,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:11,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:11,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618556662] [2022-01-18 12:13:11,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:11,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:11,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:11,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:11,599 INFO L87 Difference]: Start difference. First operand 2381 states and 6585 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:12,489 INFO L93 Difference]: Finished difference Result 4989 states and 13547 transitions. [2022-01-18 12:13:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 12:13:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:12,506 INFO L225 Difference]: With dead ends: 4989 [2022-01-18 12:13:12,506 INFO L226 Difference]: Without dead ends: 4941 [2022-01-18 12:13:12,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=608, Invalid=3174, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:13:12,508 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 486 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:12,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1292 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-01-18 12:13:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 2381. [2022-01-18 12:13:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.7634453781512605) internal successors, (6577), 2380 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6577 transitions. [2022-01-18 12:13:12,620 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6577 transitions. Word has length 67 [2022-01-18 12:13:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:12,620 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6577 transitions. [2022-01-18 12:13:12,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6577 transitions. [2022-01-18 12:13:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:12,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:12,627 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:12,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 12:13:12,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 12:13:12,844 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 468749757, now seen corresponding path program 6 times [2022-01-18 12:13:12,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:12,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454295573] [2022-01-18 12:13:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:12,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:12,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:12,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454295573] [2022-01-18 12:13:12,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454295573] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:12,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785697218] [2022-01-18 12:13:12,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:12,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:12,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:12,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:12,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:13:12,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:13:12,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:12,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:12,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:13,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:13,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785697218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:13,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:13,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:13,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120537889] [2022-01-18 12:13:13,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:13,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:13,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:13,304 INFO L87 Difference]: Start difference. First operand 2381 states and 6577 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:14,080 INFO L93 Difference]: Finished difference Result 6333 states and 17294 transitions. [2022-01-18 12:13:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:13:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:14,101 INFO L225 Difference]: With dead ends: 6333 [2022-01-18 12:13:14,101 INFO L226 Difference]: Without dead ends: 6273 [2022-01-18 12:13:14,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=619, Invalid=2573, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:13:14,103 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 477 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:14,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1282 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-01-18 12:13:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 3265. [2022-01-18 12:13:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7879901960784315) internal successors, (9100), 3264 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9100 transitions. [2022-01-18 12:13:14,210 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9100 transitions. Word has length 67 [2022-01-18 12:13:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:14,210 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9100 transitions. [2022-01-18 12:13:14,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9100 transitions. [2022-01-18 12:13:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:14,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:14,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:14,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:14,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 12:13:14,438 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 934529107, now seen corresponding path program 7 times [2022-01-18 12:13:14,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712803113] [2022-01-18 12:13:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:14,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:14,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:14,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712803113] [2022-01-18 12:13:14,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712803113] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:14,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360453459] [2022-01-18 12:13:14,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:14,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:14,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:14,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:13:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:14,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:14,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:14,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:14,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360453459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:14,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:14,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:14,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280453913] [2022-01-18 12:13:14,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:14,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:14,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:14,943 INFO L87 Difference]: Start difference. First operand 3265 states and 9100 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:15,530 INFO L93 Difference]: Finished difference Result 6231 states and 17042 transitions. [2022-01-18 12:13:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:13:15,530 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:15,546 INFO L225 Difference]: With dead ends: 6231 [2022-01-18 12:13:15,546 INFO L226 Difference]: Without dead ends: 6183 [2022-01-18 12:13:15,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1926, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 12:13:15,547 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 501 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:15,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1022 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-01-18 12:13:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 3265. [2022-01-18 12:13:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 2.7855392156862746) internal successors, (9092), 3264 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 9092 transitions. [2022-01-18 12:13:15,648 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 9092 transitions. Word has length 67 [2022-01-18 12:13:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:15,648 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 9092 transitions. [2022-01-18 12:13:15,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 9092 transitions. [2022-01-18 12:13:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:15,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:15,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:15,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:15,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:15,872 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash 636834387, now seen corresponding path program 8 times [2022-01-18 12:13:15,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154987189] [2022-01-18 12:13:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:15,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:15,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:15,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154987189] [2022-01-18 12:13:15,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154987189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:15,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002038499] [2022-01-18 12:13:15,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:15,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:15,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:15,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:13:16,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:16,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:16,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:16,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:16,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:16,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002038499] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:16,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:13:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045500517] [2022-01-18 12:13:16,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:16,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:13:16,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:13:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:13:16,380 INFO L87 Difference]: Start difference. First operand 3265 states and 9092 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:17,034 INFO L93 Difference]: Finished difference Result 5910 states and 16220 transitions. [2022-01-18 12:13:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 12:13:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:17,051 INFO L225 Difference]: With dead ends: 5910 [2022-01-18 12:13:17,051 INFO L226 Difference]: Without dead ends: 5826 [2022-01-18 12:13:17,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=534, Invalid=2658, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:13:17,053 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 388 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:17,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1347 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2022-01-18 12:13:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3737. [2022-01-18 12:13:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 2.7971092077087794) internal successors, (10450), 3736 states have internal predecessors, (10450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 10450 transitions. [2022-01-18 12:13:17,142 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 10450 transitions. Word has length 67 [2022-01-18 12:13:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:17,142 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 10450 transitions. [2022-01-18 12:13:17,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 10450 transitions. [2022-01-18 12:13:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:17,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:17,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:17,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:17,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:17,371 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1982646943, now seen corresponding path program 9 times [2022-01-18 12:13:17,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:17,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668933348] [2022-01-18 12:13:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:17,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:17,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:17,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668933348] [2022-01-18 12:13:17,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668933348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:17,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836681961] [2022-01-18 12:13:17,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:17,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:17,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:17,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:13:17,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:17,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:17,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:17,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:17,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836681961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:17,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:17,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:17,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575538431] [2022-01-18 12:13:17,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:17,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:17,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:17,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:17,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:17,802 INFO L87 Difference]: Start difference. First operand 3737 states and 10450 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:18,638 INFO L93 Difference]: Finished difference Result 6936 states and 18790 transitions. [2022-01-18 12:13:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 12:13:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:18,650 INFO L225 Difference]: With dead ends: 6936 [2022-01-18 12:13:18,650 INFO L226 Difference]: Without dead ends: 6861 [2022-01-18 12:13:18,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=668, Invalid=2754, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:13:18,651 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 649 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:18,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1308 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-01-18 12:13:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 4201. [2022-01-18 12:13:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.8119047619047617) internal successors, (11810), 4200 states have internal predecessors, (11810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11810 transitions. [2022-01-18 12:13:18,757 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11810 transitions. Word has length 67 [2022-01-18 12:13:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:18,757 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11810 transitions. [2022-01-18 12:13:18,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11810 transitions. [2022-01-18 12:13:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:18,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:18,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:18,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-18 12:13:18,983 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1846541003, now seen corresponding path program 10 times [2022-01-18 12:13:18,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185369745] [2022-01-18 12:13:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:18,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:19,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:19,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185369745] [2022-01-18 12:13:19,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185369745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:19,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907531843] [2022-01-18 12:13:19,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:19,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:19,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:19,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:13:19,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:19,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:19,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:19,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907531843] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:19,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:19,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:19,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139915417] [2022-01-18 12:13:19,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:19,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:19,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:19,398 INFO L87 Difference]: Start difference. First operand 4201 states and 11810 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:20,073 INFO L93 Difference]: Finished difference Result 5926 states and 16266 transitions. [2022-01-18 12:13:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 12:13:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:20,082 INFO L225 Difference]: With dead ends: 5926 [2022-01-18 12:13:20,082 INFO L226 Difference]: Without dead ends: 5878 [2022-01-18 12:13:20,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=532, Invalid=2438, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:13:20,084 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 486 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:20,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1157 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-01-18 12:13:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 4201. [2022-01-18 12:13:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 2.81) internal successors, (11802), 4200 states have internal predecessors, (11802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 11802 transitions. [2022-01-18 12:13:20,172 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 11802 transitions. Word has length 67 [2022-01-18 12:13:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:20,172 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 11802 transitions. [2022-01-18 12:13:20,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 11802 transitions. [2022-01-18 12:13:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:20,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:20,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:20,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:20,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:20,395 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash 197880321, now seen corresponding path program 11 times [2022-01-18 12:13:20,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:20,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42123947] [2022-01-18 12:13:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:20,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:20,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42123947] [2022-01-18 12:13:20,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42123947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:20,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966143908] [2022-01-18 12:13:20,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:20,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:20,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:20,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:20,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:13:20,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:20,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:20,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:20,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:20,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:20,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966143908] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:20,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:20,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:20,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432106385] [2022-01-18 12:13:20,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:20,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:20,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:20,862 INFO L87 Difference]: Start difference. First operand 4201 states and 11802 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:21,901 INFO L93 Difference]: Finished difference Result 8881 states and 24551 transitions. [2022-01-18 12:13:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 12:13:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:21,919 INFO L225 Difference]: With dead ends: 8881 [2022-01-18 12:13:21,919 INFO L226 Difference]: Without dead ends: 8821 [2022-01-18 12:13:21,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=949, Invalid=4453, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 12:13:21,921 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 716 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:21,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1370 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2022-01-18 12:13:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5229. [2022-01-18 12:13:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.816564651874522) internal successors, (14725), 5228 states have internal predecessors, (14725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14725 transitions. [2022-01-18 12:13:22,069 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14725 transitions. Word has length 67 [2022-01-18 12:13:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:22,069 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14725 transitions. [2022-01-18 12:13:22,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14725 transitions. [2022-01-18 12:13:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:22,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:22,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:22,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:22,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 12:13:22,304 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:22,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash 663659671, now seen corresponding path program 12 times [2022-01-18 12:13:22,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:22,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590127688] [2022-01-18 12:13:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:22,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:22,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590127688] [2022-01-18 12:13:22,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590127688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894123579] [2022-01-18 12:13:22,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:22,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:22,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:22,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:22,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:13:22,440 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:13:22,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:22,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:22,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:22,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:22,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894123579] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:22,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:22,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:22,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754918835] [2022-01-18 12:13:22,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:22,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:22,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:22,747 INFO L87 Difference]: Start difference. First operand 5229 states and 14725 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:23,696 INFO L93 Difference]: Finished difference Result 8744 states and 24213 transitions. [2022-01-18 12:13:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 12:13:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:23,711 INFO L225 Difference]: With dead ends: 8744 [2022-01-18 12:13:23,711 INFO L226 Difference]: Without dead ends: 8696 [2022-01-18 12:13:23,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=755, Invalid=3937, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:13:23,713 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 721 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:23,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1139 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2022-01-18 12:13:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 5229. [2022-01-18 12:13:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.815034429992349) internal successors, (14717), 5228 states have internal predecessors, (14717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 14717 transitions. [2022-01-18 12:13:23,829 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 14717 transitions. Word has length 67 [2022-01-18 12:13:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:23,830 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 14717 transitions. [2022-01-18 12:13:23,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 14717 transitions. [2022-01-18 12:13:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:23,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:23,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:23,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:24,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 12:13:24,055 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 365964951, now seen corresponding path program 13 times [2022-01-18 12:13:24,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:24,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039927616] [2022-01-18 12:13:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:24,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:24,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:24,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039927616] [2022-01-18 12:13:24,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039927616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:24,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959097811] [2022-01-18 12:13:24,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:24,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:24,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:24,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:13:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:24,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:24,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:24,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:24,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959097811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:24,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:24,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:13:24,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111117656] [2022-01-18 12:13:24,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:24,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:13:24,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:13:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:13:24,489 INFO L87 Difference]: Start difference. First operand 5229 states and 14717 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:25,559 INFO L93 Difference]: Finished difference Result 9420 states and 26227 transitions. [2022-01-18 12:13:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:13:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:25,576 INFO L225 Difference]: With dead ends: 9420 [2022-01-18 12:13:25,576 INFO L226 Difference]: Without dead ends: 9336 [2022-01-18 12:13:25,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=934, Invalid=5228, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:13:25,582 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 489 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:25,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1752 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-01-18 12:13:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 5905. [2022-01-18 12:13:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5904 states have (on average 2.8245257452574526) internal successors, (16676), 5904 states have internal predecessors, (16676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 16676 transitions. [2022-01-18 12:13:25,748 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 16676 transitions. Word has length 67 [2022-01-18 12:13:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:25,748 INFO L470 AbstractCegarLoop]: Abstraction has 5905 states and 16676 transitions. [2022-01-18 12:13:25,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 16676 transitions. [2022-01-18 12:13:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:25,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:25,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:25,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:25,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 12:13:25,975 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -297073973, now seen corresponding path program 14 times [2022-01-18 12:13:25,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327208545] [2022-01-18 12:13:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:25,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:26,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327208545] [2022-01-18 12:13:26,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327208545] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398273038] [2022-01-18 12:13:26,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:26,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:26,040 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:26,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:13:26,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:26,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:26,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:26,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:26,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398273038] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:26,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:26,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:26,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730888992] [2022-01-18 12:13:26,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:26,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:26,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:26,407 INFO L87 Difference]: Start difference. First operand 5905 states and 16676 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:27,409 INFO L93 Difference]: Finished difference Result 11298 states and 31316 transitions. [2022-01-18 12:13:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 12:13:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:27,432 INFO L225 Difference]: With dead ends: 11298 [2022-01-18 12:13:27,432 INFO L226 Difference]: Without dead ends: 11238 [2022-01-18 12:13:27,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 12:13:27,433 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 675 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:27,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1349 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2022-01-18 12:13:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 6861. [2022-01-18 12:13:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.8368804664723033) internal successors, (19461), 6860 states have internal predecessors, (19461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19461 transitions. [2022-01-18 12:13:27,578 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19461 transitions. Word has length 67 [2022-01-18 12:13:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:27,578 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19461 transitions. [2022-01-18 12:13:27,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19461 transitions. [2022-01-18 12:13:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:27,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:27,591 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:27,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:27,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 12:13:27,791 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 168705377, now seen corresponding path program 15 times [2022-01-18 12:13:27,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103826766] [2022-01-18 12:13:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:27,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:27,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103826766] [2022-01-18 12:13:27,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103826766] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433903388] [2022-01-18 12:13:27,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:27,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:27,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:27,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:13:27,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:27,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:27,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:27,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:28,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:28,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433903388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:28,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:28,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:28,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196779106] [2022-01-18 12:13:28,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:28,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:28,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:28,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:28,228 INFO L87 Difference]: Start difference. First operand 6861 states and 19461 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:29,186 INFO L93 Difference]: Finished difference Result 11121 states and 30889 transitions. [2022-01-18 12:13:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 12:13:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:29,208 INFO L225 Difference]: With dead ends: 11121 [2022-01-18 12:13:29,209 INFO L226 Difference]: Without dead ends: 11073 [2022-01-18 12:13:29,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=762, Invalid=3398, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:13:29,211 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 702 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:29,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1457 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2022-01-18 12:13:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 6861. [2022-01-18 12:13:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 6860 states have (on average 2.835714285714286) internal successors, (19453), 6860 states have internal predecessors, (19453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 19453 transitions. [2022-01-18 12:13:29,393 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 19453 transitions. Word has length 67 [2022-01-18 12:13:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:29,393 INFO L470 AbstractCegarLoop]: Abstraction has 6861 states and 19453 transitions. [2022-01-18 12:13:29,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 19453 transitions. [2022-01-18 12:13:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:29,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:29,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:29,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:29,609 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -128989343, now seen corresponding path program 16 times [2022-01-18 12:13:29,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:29,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398999356] [2022-01-18 12:13:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:29,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:29,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398999356] [2022-01-18 12:13:29,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398999356] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354393221] [2022-01-18 12:13:29,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:29,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:29,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:29,670 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:29,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:13:29,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:29,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:29,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:29,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:29,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:30,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354393221] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:30,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:30,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:13:30,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433394246] [2022-01-18 12:13:30,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:30,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:13:30,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:13:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:13:30,063 INFO L87 Difference]: Start difference. First operand 6861 states and 19453 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:30,992 INFO L93 Difference]: Finished difference Result 12412 states and 34576 transitions. [2022-01-18 12:13:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 12:13:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:31,024 INFO L225 Difference]: With dead ends: 12412 [2022-01-18 12:13:31,024 INFO L226 Difference]: Without dead ends: 12328 [2022-01-18 12:13:31,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=976, Invalid=4876, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:13:31,026 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 908 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:31,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1088 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-01-18 12:13:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 7661. [2022-01-18 12:13:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 7660 states have (on average 2.8460835509138382) internal successors, (21801), 7660 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 21801 transitions. [2022-01-18 12:13:31,294 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 21801 transitions. Word has length 67 [2022-01-18 12:13:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:31,294 INFO L470 AbstractCegarLoop]: Abstraction has 7661 states and 21801 transitions. [2022-01-18 12:13:31,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 21801 transitions. [2022-01-18 12:13:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:31,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:31,308 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:31,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:31,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 12:13:31,523 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:31,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 104450447, now seen corresponding path program 17 times [2022-01-18 12:13:31,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:31,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115123868] [2022-01-18 12:13:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:31,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:31,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:31,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115123868] [2022-01-18 12:13:31,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115123868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:31,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404071241] [2022-01-18 12:13:31,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:31,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:31,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:31,608 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:31,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:13:31,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:31,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:31,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:31,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:31,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404071241] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:31,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:31,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:13:31,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600612982] [2022-01-18 12:13:31,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:31,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:13:31,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:13:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:13:31,960 INFO L87 Difference]: Start difference. First operand 7661 states and 21801 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:32,209 INFO L93 Difference]: Finished difference Result 8061 states and 22752 transitions. [2022-01-18 12:13:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:13:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:32,223 INFO L225 Difference]: With dead ends: 8061 [2022-01-18 12:13:32,223 INFO L226 Difference]: Without dead ends: 8013 [2022-01-18 12:13:32,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-01-18 12:13:32,224 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:32,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1152 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2022-01-18 12:13:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7669. [2022-01-18 12:13:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7669 states, 7668 states have (on average 2.845983307250913) internal successors, (21823), 7668 states have internal predecessors, (21823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7669 states to 7669 states and 21823 transitions. [2022-01-18 12:13:32,348 INFO L78 Accepts]: Start accepts. Automaton has 7669 states and 21823 transitions. Word has length 67 [2022-01-18 12:13:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:32,348 INFO L470 AbstractCegarLoop]: Abstraction has 7669 states and 21823 transitions. [2022-01-18 12:13:32,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 7669 states and 21823 transitions. [2022-01-18 12:13:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:32,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:32,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:32,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:32,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 12:13:32,564 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 983231093, now seen corresponding path program 18 times [2022-01-18 12:13:32,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:32,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792164328] [2022-01-18 12:13:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:32,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:32,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792164328] [2022-01-18 12:13:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792164328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853273595] [2022-01-18 12:13:32,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:32,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:32,614 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:32,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:13:32,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:13:32,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:32,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:32,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:32,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:32,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853273595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:32,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:32,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:13:32,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034603700] [2022-01-18 12:13:32,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:32,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:13:32,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:13:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:13:32,913 INFO L87 Difference]: Start difference. First operand 7669 states and 21823 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:33,833 INFO L93 Difference]: Finished difference Result 10897 states and 30330 transitions. [2022-01-18 12:13:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 12:13:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:33,853 INFO L225 Difference]: With dead ends: 10897 [2022-01-18 12:13:33,853 INFO L226 Difference]: Without dead ends: 10747 [2022-01-18 12:13:33,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1172, Invalid=4680, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:13:33,855 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 840 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:33,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1316 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2022-01-18 12:13:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 8081. [2022-01-18 12:13:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 8080 states have (on average 2.853960396039604) internal successors, (23060), 8080 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 23060 transitions. [2022-01-18 12:13:34,012 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 23060 transitions. Word has length 67 [2022-01-18 12:13:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:34,012 INFO L470 AbstractCegarLoop]: Abstraction has 8081 states and 23060 transitions. [2022-01-18 12:13:34,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 23060 transitions. [2022-01-18 12:13:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:34,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:34,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:34,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:34,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:34,224 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1449010443, now seen corresponding path program 19 times [2022-01-18 12:13:34,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:34,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635080996] [2022-01-18 12:13:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:34,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:34,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635080996] [2022-01-18 12:13:34,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635080996] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:34,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700295708] [2022-01-18 12:13:34,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:34,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:34,292 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:34,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:13:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:34,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:34,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:34,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:34,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700295708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:34,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:34,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:13:34,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117182981] [2022-01-18 12:13:34,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:34,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:13:34,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:13:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:13:34,620 INFO L87 Difference]: Start difference. First operand 8081 states and 23060 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:35,251 INFO L93 Difference]: Finished difference Result 10096 states and 28386 transitions. [2022-01-18 12:13:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:13:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:35,268 INFO L225 Difference]: With dead ends: 10096 [2022-01-18 12:13:35,268 INFO L226 Difference]: Without dead ends: 10072 [2022-01-18 12:13:35,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:13:35,269 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 596 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:35,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1503 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-01-18 12:13:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 8101. [2022-01-18 12:13:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 8100 states have (on average 2.8517283950617283) internal successors, (23099), 8100 states have internal predecessors, (23099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 23099 transitions. [2022-01-18 12:13:35,465 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 23099 transitions. Word has length 67 [2022-01-18 12:13:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:35,466 INFO L470 AbstractCegarLoop]: Abstraction has 8101 states and 23099 transitions. [2022-01-18 12:13:35,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 23099 transitions. [2022-01-18 12:13:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:35,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:35,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:35,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:35,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:35,676 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash 277536545, now seen corresponding path program 20 times [2022-01-18 12:13:35,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:35,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819900947] [2022-01-18 12:13:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:35,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:35,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819900947] [2022-01-18 12:13:35,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819900947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160174030] [2022-01-18 12:13:35,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:35,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:35,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:35,738 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:35,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:13:35,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:35,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:35,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:35,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:35,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:36,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160174030] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:36,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:36,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 12:13:36,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013833424] [2022-01-18 12:13:36,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:36,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:13:36,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:13:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:13:36,080 INFO L87 Difference]: Start difference. First operand 8101 states and 23099 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:36,477 INFO L93 Difference]: Finished difference Result 8908 states and 25140 transitions. [2022-01-18 12:13:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 12:13:36,478 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:36,497 INFO L225 Difference]: With dead ends: 8908 [2022-01-18 12:13:36,497 INFO L226 Difference]: Without dead ends: 8848 [2022-01-18 12:13:36,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:13:36,499 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 412 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:36,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 910 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8848 states. [2022-01-18 12:13:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8848 to 7869. [2022-01-18 12:13:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7868 states have (on average 2.845577020843925) internal successors, (22389), 7868 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 22389 transitions. [2022-01-18 12:13:36,660 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 22389 transitions. Word has length 67 [2022-01-18 12:13:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:36,660 INFO L470 AbstractCegarLoop]: Abstraction has 7869 states and 22389 transitions. [2022-01-18 12:13:36,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 22389 transitions. [2022-01-18 12:13:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:36,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:36,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:36,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:36,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:36,891 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1492168501, now seen corresponding path program 21 times [2022-01-18 12:13:36,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:36,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384447469] [2022-01-18 12:13:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:36,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:36,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:36,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384447469] [2022-01-18 12:13:36,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384447469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214056884] [2022-01-18 12:13:36,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:36,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:36,951 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:36,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:13:37,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:13:37,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:37,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:37,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:37,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:37,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214056884] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:37,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:13:37,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273184013] [2022-01-18 12:13:37,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:37,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:37,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:37,323 INFO L87 Difference]: Start difference. First operand 7869 states and 22389 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:38,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:38,690 INFO L93 Difference]: Finished difference Result 13605 states and 38181 transitions. [2022-01-18 12:13:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 12:13:38,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:38,762 INFO L225 Difference]: With dead ends: 13605 [2022-01-18 12:13:38,762 INFO L226 Difference]: Without dead ends: 13530 [2022-01-18 12:13:38,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1601, Invalid=7711, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 12:13:38,763 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 635 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:38,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 2191 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2022-01-18 12:13:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 8613. [2022-01-18 12:13:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8613 states, 8612 states have (on average 2.8503251277287505) internal successors, (24547), 8612 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8613 states to 8613 states and 24547 transitions. [2022-01-18 12:13:38,932 INFO L78 Accepts]: Start accepts. Automaton has 8613 states and 24547 transitions. Word has length 67 [2022-01-18 12:13:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 8613 states and 24547 transitions. [2022-01-18 12:13:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8613 states and 24547 transitions. [2022-01-18 12:13:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:38,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:38,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:38,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-18 12:13:39,170 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1957947851, now seen corresponding path program 22 times [2022-01-18 12:13:39,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:39,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154971595] [2022-01-18 12:13:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:39,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:39,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:39,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154971595] [2022-01-18 12:13:39,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154971595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:39,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388813376] [2022-01-18 12:13:39,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:39,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:39,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:39,230 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:39,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 12:13:39,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:39,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:39,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:39,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:39,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:39,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388813376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:39,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:39,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:13:39,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298031970] [2022-01-18 12:13:39,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:39,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:39,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:39,548 INFO L87 Difference]: Start difference. First operand 8613 states and 24547 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:40,553 INFO L93 Difference]: Finished difference Result 12702 states and 35830 transitions. [2022-01-18 12:13:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 12:13:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:40,578 INFO L225 Difference]: With dead ends: 12702 [2022-01-18 12:13:40,578 INFO L226 Difference]: Without dead ends: 12654 [2022-01-18 12:13:40,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1106, Invalid=5700, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 12:13:40,580 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 571 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:40,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1554 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12654 states. [2022-01-18 12:13:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12654 to 8113. [2022-01-18 12:13:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8112 states have (on average 2.844181459566075) internal successors, (23072), 8112 states have internal predecessors, (23072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 23072 transitions. [2022-01-18 12:13:40,810 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 23072 transitions. Word has length 67 [2022-01-18 12:13:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:40,810 INFO L470 AbstractCegarLoop]: Abstraction has 8113 states and 23072 transitions. [2022-01-18 12:13:40,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 23072 transitions. [2022-01-18 12:13:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:40,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:40,821 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:40,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 12:13:41,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 12:13:41,022 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash -292598121, now seen corresponding path program 23 times [2022-01-18 12:13:41,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:41,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568914804] [2022-01-18 12:13:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:41,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568914804] [2022-01-18 12:13:41,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568914804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69516927] [2022-01-18 12:13:41,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:41,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:41,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:41,090 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:41,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 12:13:41,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:13:41,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69516927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:41,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:41,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:13:41,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307614699] [2022-01-18 12:13:41,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:41,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:41,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:41,457 INFO L87 Difference]: Start difference. First operand 8113 states and 23072 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:42,457 INFO L93 Difference]: Finished difference Result 12007 states and 33687 transitions. [2022-01-18 12:13:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 12:13:42,457 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:42,477 INFO L225 Difference]: With dead ends: 12007 [2022-01-18 12:13:42,478 INFO L226 Difference]: Without dead ends: 11947 [2022-01-18 12:13:42,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1410, Invalid=5232, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:13:42,479 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 661 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:42,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1303 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11947 states. [2022-01-18 12:13:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11947 to 8669. [2022-01-18 12:13:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 8668 states have (on average 2.845523765574527) internal successors, (24665), 8668 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 24665 transitions. [2022-01-18 12:13:42,638 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 24665 transitions. Word has length 67 [2022-01-18 12:13:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:42,638 INFO L470 AbstractCegarLoop]: Abstraction has 8669 states and 24665 transitions. [2022-01-18 12:13:42,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 24665 transitions. [2022-01-18 12:13:42,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:42,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:42,649 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:42,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 12:13:42,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:42,855 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash 173181229, now seen corresponding path program 24 times [2022-01-18 12:13:42,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:42,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411203732] [2022-01-18 12:13:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:42,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:42,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411203732] [2022-01-18 12:13:42,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411203732] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156637958] [2022-01-18 12:13:42,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:42,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:42,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:42,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 12:13:42,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:13:42,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:42,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:42,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:43,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156637958] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:43,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:43,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:13:43,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301486658] [2022-01-18 12:13:43,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:43,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:43,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:43,262 INFO L87 Difference]: Start difference. First operand 8669 states and 24665 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:44,000 INFO L93 Difference]: Finished difference Result 11551 states and 32449 transitions. [2022-01-18 12:13:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 12:13:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:44,020 INFO L225 Difference]: With dead ends: 11551 [2022-01-18 12:13:44,020 INFO L226 Difference]: Without dead ends: 11503 [2022-01-18 12:13:44,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=871, Invalid=3161, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:13:44,021 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 609 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:44,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1181 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11503 states. [2022-01-18 12:13:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11503 to 8353. [2022-01-18 12:13:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 8352 states have (on average 2.842432950191571) internal successors, (23740), 8352 states have internal predecessors, (23740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 23740 transitions. [2022-01-18 12:13:44,170 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 23740 transitions. Word has length 67 [2022-01-18 12:13:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:44,170 INFO L470 AbstractCegarLoop]: Abstraction has 8353 states and 23740 transitions. [2022-01-18 12:13:44,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 23740 transitions. [2022-01-18 12:13:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:44,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:44,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:44,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 12:13:44,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:44,382 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash -124513491, now seen corresponding path program 25 times [2022-01-18 12:13:44,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020008822] [2022-01-18 12:13:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:44,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:44,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:44,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020008822] [2022-01-18 12:13:44,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020008822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:44,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192561216] [2022-01-18 12:13:44,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:44,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:44,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:44,447 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:44,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 12:13:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:44,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:44,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:44,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192561216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:44,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:44,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 12:13:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856001758] [2022-01-18 12:13:44,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:13:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:13:44,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:13:44,815 INFO L87 Difference]: Start difference. First operand 8353 states and 23740 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:45,140 INFO L93 Difference]: Finished difference Result 8669 states and 24545 transitions. [2022-01-18 12:13:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 12:13:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:45,155 INFO L225 Difference]: With dead ends: 8669 [2022-01-18 12:13:45,155 INFO L226 Difference]: Without dead ends: 8633 [2022-01-18 12:13:45,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:45,156 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 308 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:45,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1032 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:13:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2022-01-18 12:13:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 8361. [2022-01-18 12:13:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8361 states, 8360 states have (on average 2.8423444976076553) internal successors, (23762), 8360 states have internal predecessors, (23762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 23762 transitions. [2022-01-18 12:13:45,275 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 23762 transitions. Word has length 67 [2022-01-18 12:13:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:45,276 INFO L470 AbstractCegarLoop]: Abstraction has 8361 states and 23762 transitions. [2022-01-18 12:13:45,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 23762 transitions. [2022-01-18 12:13:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:45,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:45,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:45,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 12:13:45,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 12:13:45,487 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:45,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:45,488 INFO L85 PathProgramCache]: Analyzing trace with hash -312172267, now seen corresponding path program 26 times [2022-01-18 12:13:45,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:45,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834252843] [2022-01-18 12:13:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:45,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:45,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834252843] [2022-01-18 12:13:45,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834252843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108760954] [2022-01-18 12:13:45,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:45,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:45,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:45,552 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:45,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 12:13:45,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:45,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:45,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:45,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:45,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108760954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:45,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:45,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:45,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126734558] [2022-01-18 12:13:45,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:45,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:45,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:45,866 INFO L87 Difference]: Start difference. First operand 8361 states and 23762 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:46,539 INFO L93 Difference]: Finished difference Result 11412 states and 31799 transitions. [2022-01-18 12:13:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 12:13:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:46,558 INFO L225 Difference]: With dead ends: 11412 [2022-01-18 12:13:46,558 INFO L226 Difference]: Without dead ends: 11277 [2022-01-18 12:13:46,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=601, Invalid=2369, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:13:46,559 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 557 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:46,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1349 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11277 states. [2022-01-18 12:13:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11277 to 9065. [2022-01-18 12:13:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8506178287731685) internal successors, (25838), 9064 states have internal predecessors, (25838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25838 transitions. [2022-01-18 12:13:46,712 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25838 transitions. Word has length 67 [2022-01-18 12:13:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:46,713 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25838 transitions. [2022-01-18 12:13:46,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25838 transitions. [2022-01-18 12:13:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:46,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:46,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:46,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 12:13:46,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 12:13:46,926 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 153607083, now seen corresponding path program 27 times [2022-01-18 12:13:46,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:46,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591996475] [2022-01-18 12:13:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:46,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:46,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:46,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591996475] [2022-01-18 12:13:46,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591996475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:46,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693385901] [2022-01-18 12:13:46,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:46,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:46,992 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:47,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 12:13:47,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:13:47,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:47,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:47,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:47,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:47,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693385901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:47,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229626584] [2022-01-18 12:13:47,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:47,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:47,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:47,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:47,323 INFO L87 Difference]: Start difference. First operand 9065 states and 25838 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:47,833 INFO L93 Difference]: Finished difference Result 10375 states and 29115 transitions. [2022-01-18 12:13:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:13:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:47,850 INFO L225 Difference]: With dead ends: 10375 [2022-01-18 12:13:47,851 INFO L226 Difference]: Without dead ends: 10327 [2022-01-18 12:13:47,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 12:13:47,851 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 418 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:47,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1304 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2022-01-18 12:13:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9065. [2022-01-18 12:13:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 2.8497352162400706) internal successors, (25830), 9064 states have internal predecessors, (25830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 25830 transitions. [2022-01-18 12:13:47,992 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 25830 transitions. Word has length 67 [2022-01-18 12:13:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:47,992 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 25830 transitions. [2022-01-18 12:13:47,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 25830 transitions. [2022-01-18 12:13:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:48,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:48,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:48,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 12:13:48,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 12:13:48,232 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -182842027, now seen corresponding path program 28 times [2022-01-18 12:13:48,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:48,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886369911] [2022-01-18 12:13:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:48,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:48,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886369911] [2022-01-18 12:13:48,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886369911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019458994] [2022-01-18 12:13:48,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:48,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:48,289 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:48,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 12:13:48,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:48,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:48,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:48,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:48,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019458994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:48,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:48,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:48,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648777602] [2022-01-18 12:13:48,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:48,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:48,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:48,614 INFO L87 Difference]: Start difference. First operand 9065 states and 25830 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:49,329 INFO L93 Difference]: Finished difference Result 12372 states and 34699 transitions. [2022-01-18 12:13:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:13:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:49,351 INFO L225 Difference]: With dead ends: 12372 [2022-01-18 12:13:49,351 INFO L226 Difference]: Without dead ends: 12297 [2022-01-18 12:13:49,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=614, Invalid=2692, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:13:49,352 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 685 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:49,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 954 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12297 states. [2022-01-18 12:13:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12297 to 9789. [2022-01-18 12:13:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 2.852983244789538) internal successors, (27925), 9788 states have internal predecessors, (27925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 27925 transitions. [2022-01-18 12:13:49,517 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 27925 transitions. Word has length 67 [2022-01-18 12:13:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 9789 states and 27925 transitions. [2022-01-18 12:13:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 27925 transitions. [2022-01-18 12:13:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:49,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:49,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:49,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 12:13:49,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 12:13:49,731 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash 282937323, now seen corresponding path program 29 times [2022-01-18 12:13:49,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:49,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764704106] [2022-01-18 12:13:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:49,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:49,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:49,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764704106] [2022-01-18 12:13:49,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764704106] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:49,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212056707] [2022-01-18 12:13:49,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:49,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:49,798 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:49,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 12:13:49,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:49,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:49,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:49,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:50,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:50,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212056707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:50,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:50,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:50,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995682530] [2022-01-18 12:13:50,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:50,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:50,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:50,169 INFO L87 Difference]: Start difference. First operand 9789 states and 27925 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:50,861 INFO L93 Difference]: Finished difference Result 11335 states and 31979 transitions. [2022-01-18 12:13:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 12:13:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:50,880 INFO L225 Difference]: With dead ends: 11335 [2022-01-18 12:13:50,880 INFO L226 Difference]: Without dead ends: 11287 [2022-01-18 12:13:50,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 12:13:50,881 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 371 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:50,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1538 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2022-01-18 12:13:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 9429. [2022-01-18 12:13:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9428 states have (on average 2.8480059397539246) internal successors, (26851), 9428 states have internal predecessors, (26851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 26851 transitions. [2022-01-18 12:13:51,086 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 26851 transitions. Word has length 67 [2022-01-18 12:13:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:51,086 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 26851 transitions. [2022-01-18 12:13:51,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 26851 transitions. [2022-01-18 12:13:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:51,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:51,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:51,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 12:13:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:51,299 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1967608649, now seen corresponding path program 30 times [2022-01-18 12:13:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986088159] [2022-01-18 12:13:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:51,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:51,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986088159] [2022-01-18 12:13:51,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986088159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:51,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111179886] [2022-01-18 12:13:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:51,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:51,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:51,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 12:13:51,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:13:51,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:51,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:51,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:51,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111179886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:51,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393287638] [2022-01-18 12:13:51,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:51,691 INFO L87 Difference]: Start difference. First operand 9429 states and 26851 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:52,255 INFO L93 Difference]: Finished difference Result 12040 states and 33806 transitions. [2022-01-18 12:13:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:13:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:52,275 INFO L225 Difference]: With dead ends: 12040 [2022-01-18 12:13:52,275 INFO L226 Difference]: Without dead ends: 11980 [2022-01-18 12:13:52,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 12:13:52,276 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 479 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:52,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1016 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2022-01-18 12:13:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 10313. [2022-01-18 12:13:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10313 states, 10312 states have (on average 2.8485259891388672) internal successors, (29374), 10312 states have internal predecessors, (29374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10313 states to 10313 states and 29374 transitions. [2022-01-18 12:13:52,448 INFO L78 Accepts]: Start accepts. Automaton has 10313 states and 29374 transitions. Word has length 67 [2022-01-18 12:13:52,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:52,448 INFO L470 AbstractCegarLoop]: Abstraction has 10313 states and 29374 transitions. [2022-01-18 12:13:52,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 10313 states and 29374 transitions. [2022-01-18 12:13:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:52,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:52,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:52,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 12:13:52,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:52,662 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1501829299, now seen corresponding path program 31 times [2022-01-18 12:13:52,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16797387] [2022-01-18 12:13:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:52,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:52,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16797387] [2022-01-18 12:13:52,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16797387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:52,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371511461] [2022-01-18 12:13:52,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:52,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:52,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:52,724 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:52,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 12:13:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:52,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:52,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:53,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371511461] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:53,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:53,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:53,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363916231] [2022-01-18 12:13:53,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:53,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:53,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:53,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:53,089 INFO L87 Difference]: Start difference. First operand 10313 states and 29374 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:53,570 INFO L93 Difference]: Finished difference Result 11913 states and 33504 transitions. [2022-01-18 12:13:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:13:53,570 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:53,591 INFO L225 Difference]: With dead ends: 11913 [2022-01-18 12:13:53,591 INFO L226 Difference]: Without dead ends: 11865 [2022-01-18 12:13:53,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:13:53,592 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 401 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:53,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 984 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11865 states. [2022-01-18 12:13:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11865 to 9773. [2022-01-18 12:13:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 9772 states have (on average 2.847421203438395) internal successors, (27825), 9772 states have internal predecessors, (27825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 27825 transitions. [2022-01-18 12:13:53,794 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 27825 transitions. Word has length 67 [2022-01-18 12:13:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:53,794 INFO L470 AbstractCegarLoop]: Abstraction has 9773 states and 27825 transitions. [2022-01-18 12:13:53,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 27825 transitions. [2022-01-18 12:13:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:53,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:53,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:53,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:54,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 12:13:54,008 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1799524019, now seen corresponding path program 32 times [2022-01-18 12:13:54,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:54,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611006632] [2022-01-18 12:13:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:54,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:54,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611006632] [2022-01-18 12:13:54,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611006632] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729726680] [2022-01-18 12:13:54,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:54,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:54,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:54,076 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:54,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 12:13:54,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:54,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:54,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:54,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:54,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729726680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:54,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:54,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:13:54,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123603051] [2022-01-18 12:13:54,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:54,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:13:54,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:13:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:13:54,476 INFO L87 Difference]: Start difference. First operand 9773 states and 27825 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:54,994 INFO L93 Difference]: Finished difference Result 11118 states and 31403 transitions. [2022-01-18 12:13:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:13:54,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:55,015 INFO L225 Difference]: With dead ends: 11118 [2022-01-18 12:13:55,015 INFO L226 Difference]: Without dead ends: 11046 [2022-01-18 12:13:55,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1793, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 12:13:55,016 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 301 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:55,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 1233 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2022-01-18 12:13:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 9929. [2022-01-18 12:13:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9929 states, 9928 states have (on average 2.847904915390814) internal successors, (28274), 9928 states have internal predecessors, (28274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 28274 transitions. [2022-01-18 12:13:55,189 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 28274 transitions. Word has length 67 [2022-01-18 12:13:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:55,189 INFO L470 AbstractCegarLoop]: Abstraction has 9929 states and 28274 transitions. [2022-01-18 12:13:55,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 28274 transitions. [2022-01-18 12:13:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:55,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:55,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:55,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 12:13:55,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:55,404 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash -453711463, now seen corresponding path program 33 times [2022-01-18 12:13:55,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:55,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817216415] [2022-01-18 12:13:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:55,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:55,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:55,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817216415] [2022-01-18 12:13:55,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817216415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:55,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597450610] [2022-01-18 12:13:55,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:55,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:55,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:55,469 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 12:13:55,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:55,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:55,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:55,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:55,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:55,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597450610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:55,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:55,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:55,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450083817] [2022-01-18 12:13:55,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:55,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:55,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:55,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:55,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:55,806 INFO L87 Difference]: Start difference. First operand 9929 states and 28274 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:56,569 INFO L93 Difference]: Finished difference Result 12237 states and 34286 transitions. [2022-01-18 12:13:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:13:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:56,588 INFO L225 Difference]: With dead ends: 12237 [2022-01-18 12:13:56,588 INFO L226 Difference]: Without dead ends: 12162 [2022-01-18 12:13:56,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 12:13:56,588 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 516 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:56,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1539 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2022-01-18 12:13:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 10357. [2022-01-18 12:13:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.8515836230204714) internal successors, (29531), 10356 states have internal predecessors, (29531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 29531 transitions. [2022-01-18 12:13:56,756 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 29531 transitions. Word has length 67 [2022-01-18 12:13:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:56,756 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 29531 transitions. [2022-01-18 12:13:56,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 29531 transitions. [2022-01-18 12:13:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:56,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:56,770 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:56,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 12:13:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:56,975 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 12067887, now seen corresponding path program 34 times [2022-01-18 12:13:56,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:56,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568758920] [2022-01-18 12:13:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:56,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:57,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:57,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568758920] [2022-01-18 12:13:57,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568758920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:57,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035637758] [2022-01-18 12:13:57,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:57,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:57,030 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:57,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 12:13:57,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:57,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:57,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:57,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:57,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:57,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035637758] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:57,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:57,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:57,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670610970] [2022-01-18 12:13:57,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:57,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:57,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:57,348 INFO L87 Difference]: Start difference. First operand 10357 states and 29531 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:57,934 INFO L93 Difference]: Finished difference Result 11340 states and 32036 transitions. [2022-01-18 12:13:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:13:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:57,953 INFO L225 Difference]: With dead ends: 11340 [2022-01-18 12:13:57,953 INFO L226 Difference]: Without dead ends: 11292 [2022-01-18 12:13:57,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 12:13:57,954 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 417 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:57,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1283 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:13:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-01-18 12:13:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 10057. [2022-01-18 12:13:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.8478520286396183) internal successors, (28638), 10056 states have internal predecessors, (28638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 28638 transitions. [2022-01-18 12:13:58,107 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 28638 transitions. Word has length 67 [2022-01-18 12:13:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:58,108 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 28638 transitions. [2022-01-18 12:13:58,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 28638 transitions. [2022-01-18 12:13:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:58,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:58,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:58,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 12:13:58,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 12:13:58,321 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2056489211, now seen corresponding path program 35 times [2022-01-18 12:13:58,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:58,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530121083] [2022-01-18 12:13:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:58,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:58,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530121083] [2022-01-18 12:13:58,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530121083] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235509392] [2022-01-18 12:13:58,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:58,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:58,389 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:58,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 12:13:58,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:58,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:58,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:13:58,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:58,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:13:58,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235509392] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:58,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:58,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:13:58,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636878135] [2022-01-18 12:13:58,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:58,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:13:58,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:13:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:13:58,703 INFO L87 Difference]: Start difference. First operand 10057 states and 28638 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:59,547 INFO L93 Difference]: Finished difference Result 13467 states and 37757 transitions. [2022-01-18 12:13:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 12:13:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:59,569 INFO L225 Difference]: With dead ends: 13467 [2022-01-18 12:13:59,570 INFO L226 Difference]: Without dead ends: 13407 [2022-01-18 12:13:59,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=660, Invalid=3000, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 12:13:59,570 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 514 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:59,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1456 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:13:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2022-01-18 12:13:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 11301. [2022-01-18 12:13:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11301 states, 11300 states have (on average 2.846283185840708) internal successors, (32163), 11300 states have internal predecessors, (32163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11301 states to 11301 states and 32163 transitions. [2022-01-18 12:13:59,756 INFO L78 Accepts]: Start accepts. Automaton has 11301 states and 32163 transitions. Word has length 67 [2022-01-18 12:13:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:59,756 INFO L470 AbstractCegarLoop]: Abstraction has 11301 states and 32163 transitions. [2022-01-18 12:13:59,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 11301 states and 32163 transitions. [2022-01-18 12:13:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:13:59,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:59,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:59,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 12:13:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 12:13:59,971 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1772698735, now seen corresponding path program 36 times [2022-01-18 12:13:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012009457] [2022-01-18 12:13:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:59,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:00,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012009457] [2022-01-18 12:14:00,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012009457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666929786] [2022-01-18 12:14:00,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:00,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:00,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:00,048 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:00,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 12:14:00,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:14:00,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:00,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:00,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:00,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666929786] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:00,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:00,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:14:00,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712853668] [2022-01-18 12:14:00,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:00,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:00,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:00,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:00,389 INFO L87 Difference]: Start difference. First operand 11301 states and 32163 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:01,225 INFO L93 Difference]: Finished difference Result 13230 states and 37194 transitions. [2022-01-18 12:14:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:14:01,226 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:01,262 INFO L225 Difference]: With dead ends: 13230 [2022-01-18 12:14:01,262 INFO L226 Difference]: Without dead ends: 13182 [2022-01-18 12:14:01,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:14:01,263 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 431 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:01,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1504 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2022-01-18 12:14:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 10909. [2022-01-18 12:14:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 10908 states have (on average 2.843142647598093) internal successors, (31013), 10908 states have internal predecessors, (31013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 31013 transitions. [2022-01-18 12:14:01,575 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 31013 transitions. Word has length 67 [2022-01-18 12:14:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:01,575 INFO L470 AbstractCegarLoop]: Abstraction has 10909 states and 31013 transitions. [2022-01-18 12:14:01,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 31013 transitions. [2022-01-18 12:14:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:14:01,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:01,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:01,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 12:14:01,811 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2070393455, now seen corresponding path program 37 times [2022-01-18 12:14:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:01,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535683595] [2022-01-18 12:14:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:01,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:01,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535683595] [2022-01-18 12:14:01,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535683595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:01,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230573065] [2022-01-18 12:14:01,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:01,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:01,876 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:01,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 12:14:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:01,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:01,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230573065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:02,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:02,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:14:02,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500221768] [2022-01-18 12:14:02,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:14:02,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:14:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:14:02,273 INFO L87 Difference]: Start difference. First operand 10909 states and 31013 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,156 INFO L93 Difference]: Finished difference Result 12931 states and 36473 transitions. [2022-01-18 12:14:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 12:14:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,184 INFO L225 Difference]: With dead ends: 12931 [2022-01-18 12:14:03,184 INFO L226 Difference]: Without dead ends: 12859 [2022-01-18 12:14:03,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=556, Invalid=3226, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:14:03,186 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 399 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1587 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12859 states. [2022-01-18 12:14:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12859 to 11213. [2022-01-18 12:14:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 11212 states have (on average 2.8441848019978595) internal successors, (31889), 11212 states have internal predecessors, (31889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 31889 transitions. [2022-01-18 12:14:03,377 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 31889 transitions. Word has length 67 [2022-01-18 12:14:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,377 INFO L470 AbstractCegarLoop]: Abstraction has 11213 states and 31889 transitions. [2022-01-18 12:14:03,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 31889 transitions. [2022-01-18 12:14:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:14:03,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,399 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:03,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:03,615 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1561534917, now seen corresponding path program 38 times [2022-01-18 12:14:03,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104848862] [2022-01-18 12:14:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104848862] [2022-01-18 12:14:03,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104848862] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:03,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902132042] [2022-01-18 12:14:03,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:03,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:03,674 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:03,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 12:14:03,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:03,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:03,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:03,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:14:03,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902132042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:03,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:14:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132331112] [2022-01-18 12:14:03,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:03,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:03,999 INFO L87 Difference]: Start difference. First operand 11213 states and 31889 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:04,750 INFO L93 Difference]: Finished difference Result 14619 states and 40953 transitions. [2022-01-18 12:14:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:14:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:04,779 INFO L225 Difference]: With dead ends: 14619 [2022-01-18 12:14:04,779 INFO L226 Difference]: Without dead ends: 14559 [2022-01-18 12:14:04,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=693, Invalid=2729, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:14:04,780 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 654 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:04,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1241 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14559 states. [2022-01-18 12:14:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14559 to 12169. [2022-01-18 12:14:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12169 states, 12168 states have (on average 2.8496055226824457) internal successors, (34674), 12168 states have internal predecessors, (34674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12169 states to 12169 states and 34674 transitions. [2022-01-18 12:14:05,046 INFO L78 Accepts]: Start accepts. Automaton has 12169 states and 34674 transitions. Word has length 67 [2022-01-18 12:14:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:05,046 INFO L470 AbstractCegarLoop]: Abstraction has 12169 states and 34674 transitions. [2022-01-18 12:14:05,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 12169 states and 34674 transitions. [2022-01-18 12:14:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:14:05,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:05,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:05,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 12:14:05,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 12:14:05,262 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2027314267, now seen corresponding path program 39 times [2022-01-18 12:14:05,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:05,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815534275] [2022-01-18 12:14:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:05,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:05,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815534275] [2022-01-18 12:14:05,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815534275] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:05,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817741510] [2022-01-18 12:14:05,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:05,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:05,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:05,325 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:05,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 12:14:05,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:05,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:05,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:05,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817741510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:05,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:05,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 12:14:05,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650940988] [2022-01-18 12:14:05,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:05,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:05,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:05,661 INFO L87 Difference]: Start difference. First operand 12169 states and 34674 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:06,338 INFO L93 Difference]: Finished difference Result 14342 states and 40301 transitions. [2022-01-18 12:14:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:14:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:06,368 INFO L225 Difference]: With dead ends: 14342 [2022-01-18 12:14:06,368 INFO L226 Difference]: Without dead ends: 14294 [2022-01-18 12:14:06,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=571, Invalid=2621, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:14:06,369 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 506 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:06,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1143 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:14:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14294 states. [2022-01-18 12:14:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14294 to 11593. [2022-01-18 12:14:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 11592 states have (on average 2.843512767425811) internal successors, (32962), 11592 states have internal predecessors, (32962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 32962 transitions. [2022-01-18 12:14:06,605 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 32962 transitions. Word has length 67 [2022-01-18 12:14:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:06,605 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 32962 transitions. [2022-01-18 12:14:06,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 32962 transitions. [2022-01-18 12:14:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:14:06,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:06,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:06,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 12:14:06,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-01-18 12:14:06,821 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1729619547, now seen corresponding path program 40 times [2022-01-18 12:14:06,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:06,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687332502] [2022-01-18 12:14:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:06,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:06,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687332502] [2022-01-18 12:14:06,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687332502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951861529] [2022-01-18 12:14:06,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:06,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:06,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:06,888 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:06,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 12:14:06,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:06,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:06,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:07,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:07,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951861529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:07,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:07,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:14:07,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231457752] [2022-01-18 12:14:07,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:07,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:14:07,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:14:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:14:07,241 INFO L87 Difference]: Start difference. First operand 11593 states and 32962 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:08,128 INFO L93 Difference]: Finished difference Result 14877 states and 41753 transitions. [2022-01-18 12:14:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:14:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:08,153 INFO L225 Difference]: With dead ends: 14877 [2022-01-18 12:14:08,153 INFO L226 Difference]: Without dead ends: 14805 [2022-01-18 12:14:08,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=760, Invalid=3932, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:14:08,155 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 531 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:08,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1513 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14805 states. [2022-01-18 12:14:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14805 to 8477. [2022-01-18 12:14:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8477 states, 8476 states have (on average 2.840608777725342) internal successors, (24077), 8476 states have internal predecessors, (24077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 24077 transitions. [2022-01-18 12:14:08,371 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 24077 transitions. Word has length 67 [2022-01-18 12:14:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:08,371 INFO L470 AbstractCegarLoop]: Abstraction has 8477 states and 24077 transitions. [2022-01-18 12:14:08,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 24077 transitions. [2022-01-18 12:14:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:14:08,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:08,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:08,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:08,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:08,582 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1963059337, now seen corresponding path program 41 times [2022-01-18 12:14:08,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377955341] [2022-01-18 12:14:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:08,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:08,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377955341] [2022-01-18 12:14:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377955341] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049171862] [2022-01-18 12:14:08,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:08,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:08,640 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:08,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 12:14:08,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:08,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:08,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:14:08,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:08,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:09,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049171862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:09,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:09,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 12:14:09,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617699540] [2022-01-18 12:14:09,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:09,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:14:09,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:14:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:14:09,017 INFO L87 Difference]: Start difference. First operand 8477 states and 24077 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:09,370 INFO L93 Difference]: Finished difference Result 8826 states and 24881 transitions. [2022-01-18 12:14:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 12:14:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:14:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:09,383 INFO L225 Difference]: With dead ends: 8826 [2022-01-18 12:14:09,383 INFO L226 Difference]: Without dead ends: 8778 [2022-01-18 12:14:09,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:09,384 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 346 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:09,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1275 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:14:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2022-01-18 12:14:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 8473. [2022-01-18 12:14:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8473 states, 8472 states have (on average 2.840651558073654) internal successors, (24066), 8472 states have internal predecessors, (24066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 24066 transitions. [2022-01-18 12:14:09,495 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 24066 transitions. Word has length 67 [2022-01-18 12:14:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:09,496 INFO L470 AbstractCegarLoop]: Abstraction has 8473 states and 24066 transitions. [2022-01-18 12:14:09,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 24066 transitions. [2022-01-18 12:14:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:09,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:09,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:09,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 12:14:09,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 12:14:09,707 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash -932150795, now seen corresponding path program 42 times [2022-01-18 12:14:09,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:09,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753928809] [2022-01-18 12:14:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:09,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:09,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753928809] [2022-01-18 12:14:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753928809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684063628] [2022-01-18 12:14:09,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:09,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:09,771 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:09,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 12:14:09,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:14:09,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:09,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:14:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:09,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:10,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684063628] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:10,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 12:14:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732599154] [2022-01-18 12:14:10,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 12:14:10,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 12:14:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:14:10,161 INFO L87 Difference]: Start difference. First operand 8473 states and 24066 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:10,278 INFO L93 Difference]: Finished difference Result 15310 states and 44184 transitions. [2022-01-18 12:14:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:14:10,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:10,312 INFO L225 Difference]: With dead ends: 15310 [2022-01-18 12:14:10,312 INFO L226 Difference]: Without dead ends: 15022 [2022-01-18 12:14:10,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:14:10,313 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 68 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:10,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 578 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2022-01-18 12:14:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 11818. [2022-01-18 12:14:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 11817 states have (on average 2.88000338495388) internal successors, (34033), 11817 states have internal predecessors, (34033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 34033 transitions. [2022-01-18 12:14:10,553 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 34033 transitions. Word has length 72 [2022-01-18 12:14:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:10,553 INFO L470 AbstractCegarLoop]: Abstraction has 11818 states and 34033 transitions. [2022-01-18 12:14:10,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 34033 transitions. [2022-01-18 12:14:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:10,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:10,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:10,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 12:14:10,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:10,768 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2143276147, now seen corresponding path program 43 times [2022-01-18 12:14:10,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:10,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955422378] [2022-01-18 12:14:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:10,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:10,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:10,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955422378] [2022-01-18 12:14:10,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955422378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:10,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727558732] [2022-01-18 12:14:10,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:10,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:10,867 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:10,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 12:14:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:10,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:10,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:11,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 12:14:11,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727558732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:11,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:11,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 24 [2022-01-18 12:14:11,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138035329] [2022-01-18 12:14:11,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:11,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:14:11,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:14:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:14:11,260 INFO L87 Difference]: Start difference. First operand 11818 states and 34033 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:13,129 INFO L93 Difference]: Finished difference Result 28511 states and 81078 transitions. [2022-01-18 12:14:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 12:14:13,130 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:13,183 INFO L225 Difference]: With dead ends: 28511 [2022-01-18 12:14:13,183 INFO L226 Difference]: Without dead ends: 28196 [2022-01-18 12:14:13,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2337, Invalid=11705, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 12:14:13,185 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 992 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:13,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2688 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28196 states. [2022-01-18 12:14:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28196 to 17561. [2022-01-18 12:14:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17561 states, 17560 states have (on average 2.8962984054669705) internal successors, (50859), 17560 states have internal predecessors, (50859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17561 states to 17561 states and 50859 transitions. [2022-01-18 12:14:13,558 INFO L78 Accepts]: Start accepts. Automaton has 17561 states and 50859 transitions. Word has length 77 [2022-01-18 12:14:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:13,558 INFO L470 AbstractCegarLoop]: Abstraction has 17561 states and 50859 transitions. [2022-01-18 12:14:13,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17561 states and 50859 transitions. [2022-01-18 12:14:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:13,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:13,581 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:13,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 12:14:13,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:13,781 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2013945907, now seen corresponding path program 44 times [2022-01-18 12:14:13,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:13,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389853636] [2022-01-18 12:14:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:13,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:13,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389853636] [2022-01-18 12:14:13,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389853636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214883923] [2022-01-18 12:14:13,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:13,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:13,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:13,884 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:13,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 12:14:13,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:13,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:13,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:13,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:14,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:14:14,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214883923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:14,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:14,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2022-01-18 12:14:14,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411467221] [2022-01-18 12:14:14,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:14,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:14:14,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:14:14,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:14:14,349 INFO L87 Difference]: Start difference. First operand 17561 states and 50859 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:17,555 INFO L93 Difference]: Finished difference Result 50708 states and 145022 transitions. [2022-01-18 12:14:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-01-18 12:14:17,555 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:17,678 INFO L225 Difference]: With dead ends: 50708 [2022-01-18 12:14:17,678 INFO L226 Difference]: Without dead ends: 50348 [2022-01-18 12:14:17,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12624 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4987, Invalid=24769, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 12:14:17,682 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1151 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:17,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2967 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50348 states. [2022-01-18 12:14:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50348 to 24277. [2022-01-18 12:14:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24277 states, 24276 states have (on average 2.902619871478003) internal successors, (70464), 24276 states have internal predecessors, (70464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24277 states to 24277 states and 70464 transitions. [2022-01-18 12:14:18,387 INFO L78 Accepts]: Start accepts. Automaton has 24277 states and 70464 transitions. Word has length 77 [2022-01-18 12:14:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:18,387 INFO L470 AbstractCegarLoop]: Abstraction has 24277 states and 70464 transitions. [2022-01-18 12:14:18,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:18,387 INFO L276 IsEmpty]: Start isEmpty. Operand 24277 states and 70464 transitions. [2022-01-18 12:14:18,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:18,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:18,419 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:18,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 12:14:18,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 12:14:18,619 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash 407986989, now seen corresponding path program 45 times [2022-01-18 12:14:18,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:18,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168279287] [2022-01-18 12:14:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:18,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:14:18,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168279287] [2022-01-18 12:14:18,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168279287] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326999421] [2022-01-18 12:14:18,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:18,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:18,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:18,697 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:18,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 12:14:18,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:14:18,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:18,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:18,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 12:14:19,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326999421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:19,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:19,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-01-18 12:14:19,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087932814] [2022-01-18 12:14:19,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:19,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:14:19,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:14:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:14:19,101 INFO L87 Difference]: Start difference. First operand 24277 states and 70464 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:21,512 INFO L93 Difference]: Finished difference Result 45069 states and 129453 transitions. [2022-01-18 12:14:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 12:14:21,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:21,602 INFO L225 Difference]: With dead ends: 45069 [2022-01-18 12:14:21,603 INFO L226 Difference]: Without dead ends: 45009 [2022-01-18 12:14:21,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9226 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3987, Invalid=18663, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:14:21,605 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1082 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:21,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2149 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45009 states. [2022-01-18 12:14:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45009 to 28437. [2022-01-18 12:14:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28437 states, 28436 states have (on average 2.914333942889295) internal successors, (82872), 28436 states have internal predecessors, (82872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28437 states to 28437 states and 82872 transitions. [2022-01-18 12:14:22,342 INFO L78 Accepts]: Start accepts. Automaton has 28437 states and 82872 transitions. Word has length 77 [2022-01-18 12:14:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:22,342 INFO L470 AbstractCegarLoop]: Abstraction has 28437 states and 82872 transitions. [2022-01-18 12:14:22,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28437 states and 82872 transitions. [2022-01-18 12:14:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:22,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:22,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:22,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:22,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 12:14:22,584 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash 873766339, now seen corresponding path program 46 times [2022-01-18 12:14:22,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:22,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892662759] [2022-01-18 12:14:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:22,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:22,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:22,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892662759] [2022-01-18 12:14:22,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892662759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:22,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310416121] [2022-01-18 12:14:22,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:22,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:22,664 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:22,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 12:14:22,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:22,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:22,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:23,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 12:14:23,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310416121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:23,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:23,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-01-18 12:14:23,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073273723] [2022-01-18 12:14:23,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:23,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:14:23,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:14:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:14:23,215 INFO L87 Difference]: Start difference. First operand 28437 states and 82872 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:24,977 INFO L93 Difference]: Finished difference Result 42790 states and 122925 transitions. [2022-01-18 12:14:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:14:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:25,061 INFO L225 Difference]: With dead ends: 42790 [2022-01-18 12:14:25,062 INFO L226 Difference]: Without dead ends: 42718 [2022-01-18 12:14:25,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2056, Invalid=11986, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 12:14:25,064 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 846 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:25,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1953 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42718 states. [2022-01-18 12:14:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42718 to 22217. [2022-01-18 12:14:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22217 states, 22216 states have (on average 2.9081292761973354) internal successors, (64607), 22216 states have internal predecessors, (64607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22217 states to 22217 states and 64607 transitions. [2022-01-18 12:14:25,790 INFO L78 Accepts]: Start accepts. Automaton has 22217 states and 64607 transitions. Word has length 77 [2022-01-18 12:14:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:25,791 INFO L470 AbstractCegarLoop]: Abstraction has 22217 states and 64607 transitions. [2022-01-18 12:14:25,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 22217 states and 64607 transitions. [2022-01-18 12:14:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:25,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:25,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:25,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:26,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 12:14:26,023 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 576071619, now seen corresponding path program 47 times [2022-01-18 12:14:26,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112374454] [2022-01-18 12:14:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:26,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112374454] [2022-01-18 12:14:26,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112374454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178997343] [2022-01-18 12:14:26,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:26,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:26,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:26,115 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:26,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 12:14:26,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:14:26,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:26,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:26,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:14:26,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178997343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:26,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:26,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:14:26,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472026621] [2022-01-18 12:14:26,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:26,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:14:26,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:14:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:14:26,573 INFO L87 Difference]: Start difference. First operand 22217 states and 64607 transitions. Second operand has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:28,159 INFO L93 Difference]: Finished difference Result 32563 states and 93461 transitions. [2022-01-18 12:14:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 12:14:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:28,233 INFO L225 Difference]: With dead ends: 32563 [2022-01-18 12:14:28,233 INFO L226 Difference]: Without dead ends: 32479 [2022-01-18 12:14:28,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1613, Invalid=9943, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 12:14:28,235 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 680 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:28,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2395 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32479 states. [2022-01-18 12:14:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32479 to 21561. [2022-01-18 12:14:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 21560 states have (on average 2.9099721706864563) internal successors, (62739), 21560 states have internal predecessors, (62739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 62739 transitions. [2022-01-18 12:14:28,844 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 62739 transitions. Word has length 77 [2022-01-18 12:14:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:28,844 INFO L470 AbstractCegarLoop]: Abstraction has 21561 states and 62739 transitions. [2022-01-18 12:14:28,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 62739 transitions. [2022-01-18 12:14:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:28,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:28,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:28,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:29,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:29,073 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1921884175, now seen corresponding path program 48 times [2022-01-18 12:14:29,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:29,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170072566] [2022-01-18 12:14:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:29,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:14:29,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:29,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170072566] [2022-01-18 12:14:29,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170072566] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:29,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503001806] [2022-01-18 12:14:29,233 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:29,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:29,234 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:29,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 12:14:29,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:14:29,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:29,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:29,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 12:14:29,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503001806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:29,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:29,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-01-18 12:14:29,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7253024] [2022-01-18 12:14:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:29,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:14:29,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:14:29,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:14:29,642 INFO L87 Difference]: Start difference. First operand 21561 states and 62739 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:32,608 INFO L93 Difference]: Finished difference Result 62616 states and 180846 transitions. [2022-01-18 12:14:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 12:14:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:32,762 INFO L225 Difference]: With dead ends: 62616 [2022-01-18 12:14:32,763 INFO L226 Difference]: Without dead ends: 62421 [2022-01-18 12:14:32,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11591 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4718, Invalid=22342, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 12:14:32,765 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1391 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:32,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2053 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62421 states. [2022-01-18 12:14:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62421 to 34189. [2022-01-18 12:14:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34189 states, 34188 states have (on average 2.9289224289224287) internal successors, (100134), 34188 states have internal predecessors, (100134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34189 states to 34189 states and 100134 transitions. [2022-01-18 12:14:33,756 INFO L78 Accepts]: Start accepts. Automaton has 34189 states and 100134 transitions. Word has length 77 [2022-01-18 12:14:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:33,756 INFO L470 AbstractCegarLoop]: Abstraction has 34189 states and 100134 transitions. [2022-01-18 12:14:33,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 34189 states and 100134 transitions. [2022-01-18 12:14:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:33,811 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:33,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:34,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 12:14:34,012 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1907303771, now seen corresponding path program 49 times [2022-01-18 12:14:34,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384693366] [2022-01-18 12:14:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:34,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:34,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384693366] [2022-01-18 12:14:34,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384693366] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626688452] [2022-01-18 12:14:34,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:34,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:34,091 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:34,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 12:14:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:34,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:34,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:34,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 12:14:34,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626688452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:34,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:34,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-01-18 12:14:34,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263737039] [2022-01-18 12:14:34,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:34,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:14:34,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:14:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:14:34,580 INFO L87 Difference]: Start difference. First operand 34189 states and 100134 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:37,527 INFO L93 Difference]: Finished difference Result 52418 states and 151701 transitions. [2022-01-18 12:14:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 12:14:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:37,689 INFO L225 Difference]: With dead ends: 52418 [2022-01-18 12:14:37,689 INFO L226 Difference]: Without dead ends: 52346 [2022-01-18 12:14:37,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7497 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2747, Invalid=16159, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 12:14:37,691 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 932 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:37,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2293 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52346 states. [2022-01-18 12:14:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52346 to 32901. [2022-01-18 12:14:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32901 states, 32900 states have (on average 2.9253495440729482) internal successors, (96244), 32900 states have internal predecessors, (96244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32901 states to 32901 states and 96244 transitions. [2022-01-18 12:14:38,853 INFO L78 Accepts]: Start accepts. Automaton has 32901 states and 96244 transitions. Word has length 77 [2022-01-18 12:14:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:38,853 INFO L470 AbstractCegarLoop]: Abstraction has 32901 states and 96244 transitions. [2022-01-18 12:14:38,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 32901 states and 96244 transitions. [2022-01-18 12:14:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:38,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:38,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:38,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:39,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:39,101 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash 305202183, now seen corresponding path program 50 times [2022-01-18 12:14:39,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:39,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9645532] [2022-01-18 12:14:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:39,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:39,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:39,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9645532] [2022-01-18 12:14:39,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9645532] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:39,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786361736] [2022-01-18 12:14:39,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:39,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:39,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:39,224 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:39,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 12:14:39,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:39,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:39,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:39,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:39,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:39,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786361736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:39,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:39,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-18 12:14:39,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264461669] [2022-01-18 12:14:39,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:39,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:14:39,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:14:39,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:14:39,728 INFO L87 Difference]: Start difference. First operand 32901 states and 96244 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:42,494 INFO L93 Difference]: Finished difference Result 59882 states and 174146 transitions. [2022-01-18 12:14:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 12:14:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:42,673 INFO L225 Difference]: With dead ends: 59882 [2022-01-18 12:14:42,673 INFO L226 Difference]: Without dead ends: 59762 [2022-01-18 12:14:42,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2690, Invalid=17902, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 12:14:42,674 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 934 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:42,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2435 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:42,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59762 states. [2022-01-18 12:14:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59762 to 29121. [2022-01-18 12:14:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29121 states, 29120 states have (on average 2.9258585164835167) internal successors, (85201), 29120 states have internal predecessors, (85201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29121 states to 29121 states and 85201 transitions. [2022-01-18 12:14:43,666 INFO L78 Accepts]: Start accepts. Automaton has 29121 states and 85201 transitions. Word has length 77 [2022-01-18 12:14:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:43,666 INFO L470 AbstractCegarLoop]: Abstraction has 29121 states and 85201 transitions. [2022-01-18 12:14:43,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 29121 states and 85201 transitions. [2022-01-18 12:14:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:43,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:43,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:43,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-01-18 12:14:43,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:43,910 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -189752111, now seen corresponding path program 51 times [2022-01-18 12:14:43,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241049312] [2022-01-18 12:14:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:43,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:44,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:44,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241049312] [2022-01-18 12:14:44,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241049312] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:44,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175259050] [2022-01-18 12:14:44,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:44,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:44,020 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:44,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 12:14:44,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:14:44,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:44,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:44,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:44,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:44,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175259050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:44,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:44,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-18 12:14:44,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827500924] [2022-01-18 12:14:44,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:44,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:14:44,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:44,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:14:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:14:44,641 INFO L87 Difference]: Start difference. First operand 29121 states and 85201 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:46,989 INFO L93 Difference]: Finished difference Result 68515 states and 199472 transitions. [2022-01-18 12:14:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 12:14:46,990 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:47,142 INFO L225 Difference]: With dead ends: 68515 [2022-01-18 12:14:47,142 INFO L226 Difference]: Without dead ends: 68395 [2022-01-18 12:14:47,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3362, Invalid=19288, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:14:47,143 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1302 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:47,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 2192 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68395 states. [2022-01-18 12:14:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68395 to 40169. [2022-01-18 12:14:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40169 states, 40168 states have (on average 2.9553624775941048) internal successors, (118711), 40168 states have internal predecessors, (118711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40169 states to 40169 states and 118711 transitions. [2022-01-18 12:14:48,325 INFO L78 Accepts]: Start accepts. Automaton has 40169 states and 118711 transitions. Word has length 77 [2022-01-18 12:14:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:48,325 INFO L470 AbstractCegarLoop]: Abstraction has 40169 states and 118711 transitions. [2022-01-18 12:14:48,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 40169 states and 118711 transitions. [2022-01-18 12:14:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:48,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:48,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:48,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:48,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-01-18 12:14:48,584 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 43687679, now seen corresponding path program 52 times [2022-01-18 12:14:48,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:48,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651915068] [2022-01-18 12:14:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:48,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:48,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651915068] [2022-01-18 12:14:48,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651915068] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:48,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571325543] [2022-01-18 12:14:48,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:48,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:48,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:48,696 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:48,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 12:14:48,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:48,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:48,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:49,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:49,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571325543] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:49,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:49,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-18 12:14:49,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559172362] [2022-01-18 12:14:49,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:49,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:14:49,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:14:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:14:49,337 INFO L87 Difference]: Start difference. First operand 40169 states and 118711 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:50,538 INFO L93 Difference]: Finished difference Result 49044 states and 143220 transitions. [2022-01-18 12:14:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 12:14:50,539 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:50,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:50,641 INFO L225 Difference]: With dead ends: 49044 [2022-01-18 12:14:50,641 INFO L226 Difference]: Without dead ends: 48948 [2022-01-18 12:14:50,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1296, Invalid=7260, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 12:14:50,643 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 808 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:50,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 2164 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48948 states. [2022-01-18 12:14:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48948 to 43461. [2022-01-18 12:14:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43461 states, 43460 states have (on average 2.9549010584445465) internal successors, (128420), 43460 states have internal predecessors, (128420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43461 states to 43461 states and 128420 transitions. [2022-01-18 12:14:51,612 INFO L78 Accepts]: Start accepts. Automaton has 43461 states and 128420 transitions. Word has length 77 [2022-01-18 12:14:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:51,613 INFO L470 AbstractCegarLoop]: Abstraction has 43461 states and 128420 transitions. [2022-01-18 12:14:51,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 43461 states and 128420 transitions. [2022-01-18 12:14:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:51,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:51,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:51,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 12:14:51,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:51,879 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -15926743, now seen corresponding path program 53 times [2022-01-18 12:14:51,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:51,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153506885] [2022-01-18 12:14:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:51,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:51,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:51,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153506885] [2022-01-18 12:14:51,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153506885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:51,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026670713] [2022-01-18 12:14:51,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:51,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:51,974 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:51,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 12:14:52,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:14:52,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:52,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:52,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:52,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:14:52,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026670713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:52,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:52,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:14:52,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049582997] [2022-01-18 12:14:52,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:52,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:14:52,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:14:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:14:52,649 INFO L87 Difference]: Start difference. First operand 43461 states and 128420 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:55,578 INFO L93 Difference]: Finished difference Result 67512 states and 196403 transitions. [2022-01-18 12:14:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 12:14:55,579 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:14:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:55,756 INFO L225 Difference]: With dead ends: 67512 [2022-01-18 12:14:55,757 INFO L226 Difference]: Without dead ends: 67152 [2022-01-18 12:14:55,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9167 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3648, Invalid=19002, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:14:55,758 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 893 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:55,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3157 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67152 states. [2022-01-18 12:14:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67152 to 42309. [2022-01-18 12:14:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42309 states, 42308 states have (on average 2.9459203933062303) internal successors, (124636), 42308 states have internal predecessors, (124636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 124636 transitions. [2022-01-18 12:14:56,977 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 124636 transitions. Word has length 77 [2022-01-18 12:14:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:56,977 INFO L470 AbstractCegarLoop]: Abstraction has 42309 states and 124636 transitions. [2022-01-18 12:14:56,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 124636 transitions. [2022-01-18 12:14:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:14:57,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:57,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:57,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 12:14:57,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 12:14:57,234 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:57,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1862558545, now seen corresponding path program 54 times [2022-01-18 12:14:57,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:57,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049207529] [2022-01-18 12:14:57,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:57,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:57,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049207529] [2022-01-18 12:14:57,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049207529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:57,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284930229] [2022-01-18 12:14:57,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:57,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:57,332 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:57,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 12:14:57,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:14:57,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:57,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:14:57,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:57,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:14:57,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284930229] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:57,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:57,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:14:57,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204002508] [2022-01-18 12:14:57,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:57,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:14:57,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:14:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:14:57,805 INFO L87 Difference]: Start difference. First operand 42309 states and 124636 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:00,970 INFO L93 Difference]: Finished difference Result 81273 states and 236179 transitions. [2022-01-18 12:15:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 12:15:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:01,163 INFO L225 Difference]: With dead ends: 81273 [2022-01-18 12:15:01,163 INFO L226 Difference]: Without dead ends: 80973 [2022-01-18 12:15:01,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10846 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4184, Invalid=22876, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 12:15:01,165 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1098 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:01,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3449 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:15:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80973 states. [2022-01-18 12:15:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80973 to 50781. [2022-01-18 12:15:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50781 states, 50780 states have (on average 2.952382827884994) internal successors, (149922), 50780 states have internal predecessors, (149922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50781 states to 50781 states and 149922 transitions. [2022-01-18 12:15:02,608 INFO L78 Accepts]: Start accepts. Automaton has 50781 states and 149922 transitions. Word has length 77 [2022-01-18 12:15:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:02,609 INFO L470 AbstractCegarLoop]: Abstraction has 50781 states and 149922 transitions. [2022-01-18 12:15:02,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 50781 states and 149922 transitions. [2022-01-18 12:15:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:02,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:02,694 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:02,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 12:15:02,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 12:15:02,894 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2092365519, now seen corresponding path program 55 times [2022-01-18 12:15:02,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:02,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915436041] [2022-01-18 12:15:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:02,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:15:02,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:02,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915436041] [2022-01-18 12:15:02,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915436041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:02,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508554816] [2022-01-18 12:15:02,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:02,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:02,977 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:02,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 12:15:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:03,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:03,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:15:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508554816] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:03,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:03,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 25 [2022-01-18 12:15:03,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957721259] [2022-01-18 12:15:03,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:03,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:15:03,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:15:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:15:03,658 INFO L87 Difference]: Start difference. First operand 50781 states and 149922 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:07,184 INFO L93 Difference]: Finished difference Result 116411 states and 340067 transitions. [2022-01-18 12:15:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-18 12:15:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:07,569 INFO L225 Difference]: With dead ends: 116411 [2022-01-18 12:15:07,569 INFO L226 Difference]: Without dead ends: 116231 [2022-01-18 12:15:07,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13242 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4854, Invalid=27726, Unknown=0, NotChecked=0, Total=32580 [2022-01-18 12:15:07,572 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1135 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:07,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 2201 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116231 states. [2022-01-18 12:15:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116231 to 62961. [2022-01-18 12:15:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62961 states, 62960 states have (on average 2.9530654383735704) internal successors, (185925), 62960 states have internal predecessors, (185925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62961 states to 62961 states and 185925 transitions. [2022-01-18 12:15:10,257 INFO L78 Accepts]: Start accepts. Automaton has 62961 states and 185925 transitions. Word has length 77 [2022-01-18 12:15:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:10,257 INFO L470 AbstractCegarLoop]: Abstraction has 62961 states and 185925 transitions. [2022-01-18 12:15:10,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 62961 states and 185925 transitions. [2022-01-18 12:15:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:10,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:10,356 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:10,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:10,557 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 324405281, now seen corresponding path program 56 times [2022-01-18 12:15:10,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:10,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427278984] [2022-01-18 12:15:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:10,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:10,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427278984] [2022-01-18 12:15:10,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427278984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656359476] [2022-01-18 12:15:10,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:10,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:10,654 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 12:15:10,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:10,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:10,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:10,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:10,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:15:11,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656359476] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:11,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:11,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 27 [2022-01-18 12:15:11,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830062935] [2022-01-18 12:15:11,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:11,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:15:11,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:15:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:15:11,097 INFO L87 Difference]: Start difference. First operand 62961 states and 185925 transitions. Second operand has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:12,940 INFO L93 Difference]: Finished difference Result 108080 states and 318427 transitions. [2022-01-18 12:15:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 12:15:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:13,231 INFO L225 Difference]: With dead ends: 108080 [2022-01-18 12:15:13,231 INFO L226 Difference]: Without dead ends: 107972 [2022-01-18 12:15:13,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1182, Invalid=7190, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 12:15:13,232 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 916 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:13,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1964 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107972 states. [2022-01-18 12:15:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107972 to 91801. [2022-01-18 12:15:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 2.9727995642701526) internal successors, (272903), 91800 states have internal predecessors, (272903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 272903 transitions. [2022-01-18 12:15:15,811 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 272903 transitions. Word has length 77 [2022-01-18 12:15:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:15,812 INFO L470 AbstractCegarLoop]: Abstraction has 91801 states and 272903 transitions. [2022-01-18 12:15:15,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 272903 transitions. [2022-01-18 12:15:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:16,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:16,009 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:16,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:16,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:16,227 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1543677713, now seen corresponding path program 57 times [2022-01-18 12:15:16,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860593822] [2022-01-18 12:15:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:16,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:16,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860593822] [2022-01-18 12:15:16,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860593822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033547528] [2022-01-18 12:15:16,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:16,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:16,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:16,332 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:16,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 12:15:16,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:15:16,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:16,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:16,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:17,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:15:17,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033547528] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:17,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:17,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:15:17,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221978015] [2022-01-18 12:15:17,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:17,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:15:17,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:17,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:15:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:15:17,126 INFO L87 Difference]: Start difference. First operand 91801 states and 272903 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:21,344 INFO L93 Difference]: Finished difference Result 139731 states and 410454 transitions. [2022-01-18 12:15:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-18 12:15:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:21,744 INFO L225 Difference]: With dead ends: 139731 [2022-01-18 12:15:21,744 INFO L226 Difference]: Without dead ends: 139446 [2022-01-18 12:15:21,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14023 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5085, Invalid=27135, Unknown=0, NotChecked=0, Total=32220 [2022-01-18 12:15:21,745 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1214 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:21,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 3514 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139446 states. [2022-01-18 12:15:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139446 to 93029. [2022-01-18 12:15:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93029 states, 93028 states have (on average 2.971707442920411) internal successors, (276452), 93028 states have internal predecessors, (276452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93029 states to 93029 states and 276452 transitions. [2022-01-18 12:15:24,738 INFO L78 Accepts]: Start accepts. Automaton has 93029 states and 276452 transitions. Word has length 77 [2022-01-18 12:15:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:24,738 INFO L470 AbstractCegarLoop]: Abstraction has 93029 states and 276452 transitions. [2022-01-18 12:15:24,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 93029 states and 276452 transitions. [2022-01-18 12:15:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:24,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:24,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:24,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:25,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:25,080 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1396411191, now seen corresponding path program 58 times [2022-01-18 12:15:25,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:25,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961701170] [2022-01-18 12:15:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:25,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:25,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961701170] [2022-01-18 12:15:25,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961701170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636698093] [2022-01-18 12:15:25,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:15:25,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:25,165 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:25,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 12:15:25,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:15:25,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:25,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:25,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:25,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636698093] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:25,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:25,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 27 [2022-01-18 12:15:25,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222299259] [2022-01-18 12:15:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:25,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:15:25,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:15:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:15:25,604 INFO L87 Difference]: Start difference. First operand 93029 states and 276452 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:29,032 INFO L93 Difference]: Finished difference Result 177380 states and 520777 transitions. [2022-01-18 12:15:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 12:15:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:30,002 INFO L225 Difference]: With dead ends: 177380 [2022-01-18 12:15:30,002 INFO L226 Difference]: Without dead ends: 177320 [2022-01-18 12:15:30,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9648 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4214, Invalid=20592, Unknown=0, NotChecked=0, Total=24806 [2022-01-18 12:15:30,003 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 766 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:30,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2715 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177320 states. [2022-01-18 12:15:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177320 to 120037. [2022-01-18 12:15:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120037 states, 120036 states have (on average 2.961344929854377) internal successors, (355468), 120036 states have internal predecessors, (355468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120037 states to 120037 states and 355468 transitions. [2022-01-18 12:15:34,588 INFO L78 Accepts]: Start accepts. Automaton has 120037 states and 355468 transitions. Word has length 77 [2022-01-18 12:15:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 120037 states and 355468 transitions. [2022-01-18 12:15:34,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 120037 states and 355468 transitions. [2022-01-18 12:15:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:34,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:34,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:34,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:34,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 12:15:34,996 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash 158341105, now seen corresponding path program 59 times [2022-01-18 12:15:34,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:34,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183278266] [2022-01-18 12:15:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:34,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:15:35,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:35,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183278266] [2022-01-18 12:15:35,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183278266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:35,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408794852] [2022-01-18 12:15:35,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:35,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:35,080 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:35,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 12:15:35,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:15:35,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:35,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:35,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:35,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:15:35,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408794852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:35,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-01-18 12:15:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779726574] [2022-01-18 12:15:35,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:15:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:15:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:15:35,548 INFO L87 Difference]: Start difference. First operand 120037 states and 355468 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:39,795 INFO L93 Difference]: Finished difference Result 168996 states and 495587 transitions. [2022-01-18 12:15:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 12:15:39,795 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:40,278 INFO L225 Difference]: With dead ends: 168996 [2022-01-18 12:15:40,278 INFO L226 Difference]: Without dead ends: 168831 [2022-01-18 12:15:40,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11501 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4065, Invalid=23657, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 12:15:40,279 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1219 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:40,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2818 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:15:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168831 states. [2022-01-18 12:15:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168831 to 78493. [2022-01-18 12:15:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78493 states, 78492 states have (on average 2.9483514243489783) internal successors, (231422), 78492 states have internal predecessors, (231422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78493 states to 78493 states and 231422 transitions. [2022-01-18 12:15:43,987 INFO L78 Accepts]: Start accepts. Automaton has 78493 states and 231422 transitions. Word has length 77 [2022-01-18 12:15:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:43,987 INFO L470 AbstractCegarLoop]: Abstraction has 78493 states and 231422 transitions. [2022-01-18 12:15:43,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 78493 states and 231422 transitions. [2022-01-18 12:15:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:44,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:44,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:44,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:44,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-01-18 12:15:44,314 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash 375939123, now seen corresponding path program 60 times [2022-01-18 12:15:44,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451865920] [2022-01-18 12:15:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:44,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:44,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:44,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451865920] [2022-01-18 12:15:44,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451865920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:44,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960990803] [2022-01-18 12:15:44,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:44,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:44,480 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:44,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 12:15:44,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:15:44,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:44,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:44,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:44,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:15:44,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960990803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:44,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:44,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:15:44,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480356052] [2022-01-18 12:15:44,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:44,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:15:44,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:15:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:15:44,999 INFO L87 Difference]: Start difference. First operand 78493 states and 231422 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:48,605 INFO L93 Difference]: Finished difference Result 158506 states and 463091 transitions. [2022-01-18 12:15:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-18 12:15:48,605 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:49,038 INFO L225 Difference]: With dead ends: 158506 [2022-01-18 12:15:49,038 INFO L226 Difference]: Without dead ends: 158371 [2022-01-18 12:15:49,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10521 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3784, Invalid=21976, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 12:15:49,039 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1192 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:49,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2802 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158371 states. [2022-01-18 12:15:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158371 to 96705. [2022-01-18 12:15:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96705 states, 96704 states have (on average 2.9457830079417606) internal successors, (284869), 96704 states have internal predecessors, (284869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96705 states to 96705 states and 284869 transitions. [2022-01-18 12:15:52,583 INFO L78 Accepts]: Start accepts. Automaton has 96705 states and 284869 transitions. Word has length 77 [2022-01-18 12:15:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:52,583 INFO L470 AbstractCegarLoop]: Abstraction has 96705 states and 284869 transitions. [2022-01-18 12:15:52,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 96705 states and 284869 transitions. [2022-01-18 12:15:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:15:52,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:52,749 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:52,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 12:15:52,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:52,950 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1606859835, now seen corresponding path program 61 times [2022-01-18 12:15:52,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:52,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621885270] [2022-01-18 12:15:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:52,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:15:53,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621885270] [2022-01-18 12:15:53,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621885270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076817248] [2022-01-18 12:15:53,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:53,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:53,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:53,060 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:53,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 12:15:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:15:53,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:53,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:15:53,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076817248] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:53,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:53,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-01-18 12:15:53,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382820284] [2022-01-18 12:15:53,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:53,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:15:53,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:15:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:15:53,478 INFO L87 Difference]: Start difference. First operand 96705 states and 284869 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:56,471 INFO L93 Difference]: Finished difference Result 145587 states and 426382 transitions. [2022-01-18 12:15:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 12:15:56,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:15:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:57,010 INFO L225 Difference]: With dead ends: 145587 [2022-01-18 12:15:57,011 INFO L226 Difference]: Without dead ends: 145407 [2022-01-18 12:15:57,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8562 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3400, Invalid=17192, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 12:15:57,012 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1314 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:57,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 2405 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145407 states. [2022-01-18 12:16:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145407 to 116905. [2022-01-18 12:16:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116905 states, 116904 states have (on average 2.9534917539177443) internal successors, (345275), 116904 states have internal predecessors, (345275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116905 states to 116905 states and 345275 transitions. [2022-01-18 12:16:00,711 INFO L78 Accepts]: Start accepts. Automaton has 116905 states and 345275 transitions. Word has length 77 [2022-01-18 12:16:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:00,711 INFO L470 AbstractCegarLoop]: Abstraction has 116905 states and 345275 transitions. [2022-01-18 12:16:00,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 116905 states and 345275 transitions. [2022-01-18 12:16:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:16:00,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:00,920 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:00,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:01,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:01,120 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1736190075, now seen corresponding path program 62 times [2022-01-18 12:16:01,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:01,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832150067] [2022-01-18 12:16:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:01,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:16:01,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:01,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832150067] [2022-01-18 12:16:01,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832150067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:01,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059611328] [2022-01-18 12:16:01,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:01,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:01,207 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:01,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 12:16:01,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:01,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:01,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:16:01,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:02,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:16:02,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059611328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:02,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:02,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-01-18 12:16:02,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95909660] [2022-01-18 12:16:02,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:02,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:16:02,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:16:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:16:02,298 INFO L87 Difference]: Start difference. First operand 116905 states and 345275 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:05,854 INFO L93 Difference]: Finished difference Result 214479 states and 628934 transitions. [2022-01-18 12:16:05,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 12:16:05,854 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:16:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:06,525 INFO L225 Difference]: With dead ends: 214479 [2022-01-18 12:16:06,525 INFO L226 Difference]: Without dead ends: 214374 [2022-01-18 12:16:06,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9705 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3948, Invalid=19308, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 12:16:06,526 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1702 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:06,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1633 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214374 states. [2022-01-18 12:16:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214374 to 144181. [2022-01-18 12:16:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144181 states, 144180 states have (on average 2.9559439589402134) internal successors, (426188), 144180 states have internal predecessors, (426188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144181 states to 144181 states and 426188 transitions. [2022-01-18 12:16:11,719 INFO L78 Accepts]: Start accepts. Automaton has 144181 states and 426188 transitions. Word has length 77 [2022-01-18 12:16:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:11,719 INFO L470 AbstractCegarLoop]: Abstraction has 144181 states and 426188 transitions. [2022-01-18 12:16:11,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 144181 states and 426188 transitions. [2022-01-18 12:16:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:16:11,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:11,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:11,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:12,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:12,150 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2092997871, now seen corresponding path program 63 times [2022-01-18 12:16:12,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:12,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808039975] [2022-01-18 12:16:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:12,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:16:12,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:12,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808039975] [2022-01-18 12:16:12,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808039975] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653052903] [2022-01-18 12:16:12,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:12,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:12,236 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:12,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 12:16:12,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:16:12,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:12,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:16:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:12,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 12:16:12,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653052903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:12,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:12,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2022-01-18 12:16:12,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132655716] [2022-01-18 12:16:12,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:12,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:16:12,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:16:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:16:12,761 INFO L87 Difference]: Start difference. First operand 144181 states and 426188 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:15,695 INFO L93 Difference]: Finished difference Result 196221 states and 575779 transitions. [2022-01-18 12:16:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:16:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:16:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:16,256 INFO L225 Difference]: With dead ends: 196221 [2022-01-18 12:16:16,257 INFO L226 Difference]: Without dead ends: 196125 [2022-01-18 12:16:16,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5555 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2224, Invalid=12296, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 12:16:16,258 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1255 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:16,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 1538 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196125 states. [2022-01-18 12:16:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196125 to 144181. [2022-01-18 12:16:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144181 states, 144180 states have (on average 2.9556110417533636) internal successors, (426140), 144180 states have internal predecessors, (426140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144181 states to 144181 states and 426140 transitions. [2022-01-18 12:16:21,231 INFO L78 Accepts]: Start accepts. Automaton has 144181 states and 426140 transitions. Word has length 77 [2022-01-18 12:16:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:21,232 INFO L470 AbstractCegarLoop]: Abstraction has 144181 states and 426140 transitions. [2022-01-18 12:16:21,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 144181 states and 426140 transitions. [2022-01-18 12:16:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:16:21,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:21,474 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:21,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:21,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:21,676 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1553588417, now seen corresponding path program 64 times [2022-01-18 12:16:21,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942723565] [2022-01-18 12:16:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:21,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:21,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:21,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942723565] [2022-01-18 12:16:21,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942723565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903206799] [2022-01-18 12:16:21,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:21,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:21,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:21,766 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:21,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 12:16:21,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:21,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:16:21,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:22,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 12:16:22,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903206799] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:22,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 26 [2022-01-18 12:16:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022708974] [2022-01-18 12:16:22,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:22,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:16:22,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:16:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:16:22,194 INFO L87 Difference]: Start difference. First operand 144181 states and 426140 transitions. Second operand has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:26,731 INFO L93 Difference]: Finished difference Result 313363 states and 924522 transitions. [2022-01-18 12:16:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-18 12:16:26,731 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:16:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:27,847 INFO L225 Difference]: With dead ends: 313363 [2022-01-18 12:16:27,847 INFO L226 Difference]: Without dead ends: 313228 [2022-01-18 12:16:27,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8701 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3574, Invalid=17306, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 12:16:27,848 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1364 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:27,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 2436 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:16:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313228 states. [2022-01-18 12:16:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313228 to 205189. [2022-01-18 12:16:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205189 states, 205188 states have (on average 2.9693159444022066) internal successors, (609268), 205188 states have internal predecessors, (609268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205189 states to 205189 states and 609268 transitions. [2022-01-18 12:16:35,943 INFO L78 Accepts]: Start accepts. Automaton has 205189 states and 609268 transitions. Word has length 77 [2022-01-18 12:16:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:35,943 INFO L470 AbstractCegarLoop]: Abstraction has 205189 states and 609268 transitions. [2022-01-18 12:16:35,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 205189 states and 609268 transitions. [2022-01-18 12:16:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:16:36,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:36,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:36,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:36,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-18 12:16:36,466 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 310417253, now seen corresponding path program 65 times [2022-01-18 12:16:36,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:36,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719494105] [2022-01-18 12:16:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:36,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:16:36,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719494105] [2022-01-18 12:16:36,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719494105] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:36,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905656482] [2022-01-18 12:16:36,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:16:36,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:36,549 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:36,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 12:16:36,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:16:36,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:36,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:16:36,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:36,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 12:16:36,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905656482] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:36,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:36,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 22 [2022-01-18 12:16:36,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463406074] [2022-01-18 12:16:36,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:36,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:16:36,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:16:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:16:36,978 INFO L87 Difference]: Start difference. First operand 205189 states and 609268 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:41,220 INFO L93 Difference]: Finished difference Result 240508 states and 710608 transitions. [2022-01-18 12:16:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 12:16:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:16:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:42,230 INFO L225 Difference]: With dead ends: 240508 [2022-01-18 12:16:42,231 INFO L226 Difference]: Without dead ends: 240253 [2022-01-18 12:16:42,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3745, Invalid=18605, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 12:16:42,232 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1426 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:42,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 2121 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:16:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240253 states. [2022-01-18 12:16:48,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240253 to 208877. [2022-01-18 12:16:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208877 states, 208876 states have (on average 2.968296980026427) internal successors, (620006), 208876 states have internal predecessors, (620006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208877 states to 208877 states and 620006 transitions. [2022-01-18 12:16:49,037 INFO L78 Accepts]: Start accepts. Automaton has 208877 states and 620006 transitions. Word has length 77 [2022-01-18 12:16:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:49,037 INFO L470 AbstractCegarLoop]: Abstraction has 208877 states and 620006 transitions. [2022-01-18 12:16:49,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 208877 states and 620006 transitions. [2022-01-18 12:16:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:16:49,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:49,363 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:49,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:49,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:49,564 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 776196603, now seen corresponding path program 66 times [2022-01-18 12:16:49,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:49,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466127200] [2022-01-18 12:16:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:49,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:16:49,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:49,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466127200] [2022-01-18 12:16:49,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466127200] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:49,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162854769] [2022-01-18 12:16:49,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:16:49,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:49,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:49,644 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:49,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 12:16:49,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:16:49,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:49,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:16:49,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:49,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 12:16:50,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162854769] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:50,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:50,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 22 [2022-01-18 12:16:50,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379235847] [2022-01-18 12:16:50,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:50,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:16:50,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:16:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:16:50,034 INFO L87 Difference]: Start difference. First operand 208877 states and 620006 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:53,059 INFO L93 Difference]: Finished difference Result 227793 states and 673967 transitions. [2022-01-18 12:16:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 12:16:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:16:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:54,279 INFO L225 Difference]: With dead ends: 227793 [2022-01-18 12:16:54,279 INFO L226 Difference]: Without dead ends: 227745 [2022-01-18 12:16:54,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1783, Invalid=9559, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:16:54,280 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1060 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:54,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 2048 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227745 states. [2022-01-18 12:16:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227745 to 208877. [2022-01-18 12:16:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208877 states, 208876 states have (on average 2.9682586797908805) internal successors, (619998), 208876 states have internal predecessors, (619998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208877 states to 208877 states and 619998 transitions. [2022-01-18 12:17:00,193 INFO L78 Accepts]: Start accepts. Automaton has 208877 states and 619998 transitions. Word has length 77 [2022-01-18 12:17:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:00,193 INFO L470 AbstractCegarLoop]: Abstraction has 208877 states and 619998 transitions. [2022-01-18 12:17:00,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 208877 states and 619998 transitions. [2022-01-18 12:17:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:17:01,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:01,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:01,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:01,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 12:17:01,566 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 439747493, now seen corresponding path program 67 times [2022-01-18 12:17:01,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059763410] [2022-01-18 12:17:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:01,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:17:01,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059763410] [2022-01-18 12:17:01,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059763410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:01,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872709054] [2022-01-18 12:17:01,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:17:01,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:01,635 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:01,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 12:17:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:01,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:17:01,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:01,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:17:02,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872709054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:02,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:02,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-01-18 12:17:02,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78720339] [2022-01-18 12:17:02,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:02,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:17:02,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:17:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:17:02,030 INFO L87 Difference]: Start difference. First operand 208877 states and 619998 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:06,373 INFO L93 Difference]: Finished difference Result 283353 states and 838038 transitions. [2022-01-18 12:17:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-18 12:17:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:17:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:07,295 INFO L225 Difference]: With dead ends: 283353 [2022-01-18 12:17:07,295 INFO L226 Difference]: Without dead ends: 283173 [2022-01-18 12:17:07,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12236 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4532, Invalid=24538, Unknown=0, NotChecked=0, Total=29070 [2022-01-18 12:17:07,296 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1655 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:07,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1655 Valid, 2329 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283173 states. [2022-01-18 12:17:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283173 to 211217. [2022-01-18 12:17:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211217 states, 211216 states have (on average 2.9682457768350883) internal successors, (626941), 211216 states have internal predecessors, (626941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211217 states to 211217 states and 626941 transitions. [2022-01-18 12:17:15,113 INFO L78 Accepts]: Start accepts. Automaton has 211217 states and 626941 transitions. Word has length 77 [2022-01-18 12:17:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:15,113 INFO L470 AbstractCegarLoop]: Abstraction has 211217 states and 626941 transitions. [2022-01-18 12:17:15,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 211217 states and 626941 transitions. [2022-01-18 12:17:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:17:15,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:15,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:15,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 12:17:15,650 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash 905526843, now seen corresponding path program 68 times [2022-01-18 12:17:15,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:15,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680682518] [2022-01-18 12:17:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:15,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:17:15,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680682518] [2022-01-18 12:17:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680682518] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928548685] [2022-01-18 12:17:15,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:17:15,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:15,717 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:15,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 12:17:15,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:17:15,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:17:15,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:16,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:17:16,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928548685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:16,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:16,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-01-18 12:17:16,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76898437] [2022-01-18 12:17:16,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:16,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:17:16,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:17:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:17:16,114 INFO L87 Difference]: Start difference. First operand 211217 states and 626941 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:19,711 INFO L93 Difference]: Finished difference Result 260965 states and 773185 transitions. [2022-01-18 12:17:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 12:17:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:17:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:21,103 INFO L225 Difference]: With dead ends: 260965 [2022-01-18 12:17:21,104 INFO L226 Difference]: Without dead ends: 260917 [2022-01-18 12:17:21,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6831 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2447, Invalid=15109, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 12:17:21,105 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1152 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:21,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 2414 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:17:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260917 states. [2022-01-18 12:17:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260917 to 207265. [2022-01-18 12:17:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207265 states, 207264 states have (on average 2.9690105372857802) internal successors, (615369), 207264 states have internal predecessors, (615369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207265 states to 207265 states and 615369 transitions. [2022-01-18 12:17:28,117 INFO L78 Accepts]: Start accepts. Automaton has 207265 states and 615369 transitions. Word has length 77 [2022-01-18 12:17:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:28,118 INFO L470 AbstractCegarLoop]: Abstraction has 207265 states and 615369 transitions. [2022-01-18 12:17:28,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 207265 states and 615369 transitions. [2022-01-18 12:17:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:17:28,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:28,430 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:28,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:28,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-01-18 12:17:28,631 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1345019129, now seen corresponding path program 69 times [2022-01-18 12:17:28,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:28,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769941100] [2022-01-18 12:17:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:28,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:17:28,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769941100] [2022-01-18 12:17:28,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769941100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:28,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860318869] [2022-01-18 12:17:28,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:17:28,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:28,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:28,701 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:28,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 12:17:28,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 12:17:28,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:28,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:17:28,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:28,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:17:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860318869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:29,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:17:29,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234951518] [2022-01-18 12:17:29,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:17:29,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:17:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:17:29,106 INFO L87 Difference]: Start difference. First operand 207265 states and 615369 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:33,512 INFO L93 Difference]: Finished difference Result 272676 states and 804937 transitions. [2022-01-18 12:17:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 12:17:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:17:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:34,958 INFO L225 Difference]: With dead ends: 272676 [2022-01-18 12:17:34,959 INFO L226 Difference]: Without dead ends: 272616 [2022-01-18 12:17:34,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10940 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4398, Invalid=22334, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 12:17:34,960 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1402 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:34,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 2836 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:35,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272616 states. [2022-01-18 12:17:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272616 to 209001. [2022-01-18 12:17:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209001 states, 209000 states have (on average 2.968913875598086) internal successors, (620503), 209000 states have internal predecessors, (620503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209001 states to 209001 states and 620503 transitions. [2022-01-18 12:17:42,095 INFO L78 Accepts]: Start accepts. Automaton has 209001 states and 620503 transitions. Word has length 77 [2022-01-18 12:17:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:42,095 INFO L470 AbstractCegarLoop]: Abstraction has 209001 states and 620503 transitions. [2022-01-18 12:17:42,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 209001 states and 620503 transitions. [2022-01-18 12:17:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:17:42,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:42,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:42,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 12:17:42,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:42,611 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:42,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash -879239779, now seen corresponding path program 70 times [2022-01-18 12:17:42,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:42,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650786898] [2022-01-18 12:17:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:42,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:17:42,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:42,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650786898] [2022-01-18 12:17:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650786898] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:42,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176716870] [2022-01-18 12:17:42,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:17:42,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:42,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:42,708 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:42,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 12:17:42,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:17:42,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:42,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:17:42,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:43,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:17:43,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176716870] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:43,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:43,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:17:43,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941663200] [2022-01-18 12:17:43,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:43,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:17:43,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:17:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:17:43,199 INFO L87 Difference]: Start difference. First operand 209001 states and 620503 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:46,754 INFO L93 Difference]: Finished difference Result 257541 states and 761466 transitions. [2022-01-18 12:17:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-18 12:17:46,754 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:17:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:48,077 INFO L225 Difference]: With dead ends: 257541 [2022-01-18 12:17:48,078 INFO L226 Difference]: Without dead ends: 257493 [2022-01-18 12:17:48,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5693 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2303, Invalid=13197, Unknown=0, NotChecked=0, Total=15500 [2022-01-18 12:17:48,078 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1041 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:48,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 2614 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257493 states. [2022-01-18 12:17:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257493 to 206589. [2022-01-18 12:17:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206589 states, 206588 states have (on average 2.969281855674095) internal successors, (613418), 206588 states have internal predecessors, (613418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206589 states to 206589 states and 613418 transitions. [2022-01-18 12:17:55,112 INFO L78 Accepts]: Start accepts. Automaton has 206589 states and 613418 transitions. Word has length 77 [2022-01-18 12:17:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:55,112 INFO L470 AbstractCegarLoop]: Abstraction has 206589 states and 613418 transitions. [2022-01-18 12:17:55,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 206589 states and 613418 transitions. [2022-01-18 12:17:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:17:55,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:55,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:55,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:55,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:55,629 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1176934499, now seen corresponding path program 71 times [2022-01-18 12:17:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:55,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285213876] [2022-01-18 12:17:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:55,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:55,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285213876] [2022-01-18 12:17:55,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285213876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855769003] [2022-01-18 12:17:55,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:17:55,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:55,714 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:55,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 12:17:55,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:17:55,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:55,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:17:55,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:56,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:56,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855769003] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:56,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:56,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:17:56,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940560773] [2022-01-18 12:17:56,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:56,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:17:56,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:17:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:17:56,124 INFO L87 Difference]: Start difference. First operand 206589 states and 613418 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:59,349 INFO L93 Difference]: Finished difference Result 258351 states and 767554 transitions. [2022-01-18 12:17:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:17:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:17:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:00,186 INFO L225 Difference]: With dead ends: 258351 [2022-01-18 12:18:00,186 INFO L226 Difference]: Without dead ends: 258279 [2022-01-18 12:18:00,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1703, Invalid=9427, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 12:18:00,186 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 951 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:00,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 2359 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:18:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258279 states. [2022-01-18 12:18:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258279 to 207733. [2022-01-18 12:18:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207733 states, 207732 states have (on average 2.96940288448578) internal successors, (616840), 207732 states have internal predecessors, (616840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207733 states to 207733 states and 616840 transitions. [2022-01-18 12:18:08,100 INFO L78 Accepts]: Start accepts. Automaton has 207733 states and 616840 transitions. Word has length 77 [2022-01-18 12:18:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:08,101 INFO L470 AbstractCegarLoop]: Abstraction has 207733 states and 616840 transitions. [2022-01-18 12:18:08,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 207733 states and 616840 transitions. [2022-01-18 12:18:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:18:09,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:09,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:09,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:09,435 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash 168878057, now seen corresponding path program 72 times [2022-01-18 12:18:09,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888582610] [2022-01-18 12:18:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:18:09,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:09,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888582610] [2022-01-18 12:18:09,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888582610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:09,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590524618] [2022-01-18 12:18:09,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:18:09,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:09,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:09,503 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 12:18:09,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:18:09,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:09,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:18:09,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:09,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:18:09,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590524618] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:09,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:09,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-01-18 12:18:09,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048899962] [2022-01-18 12:18:09,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:09,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:18:09,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:18:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:18:09,893 INFO L87 Difference]: Start difference. First operand 207733 states and 616840 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:14,092 INFO L93 Difference]: Finished difference Result 290438 states and 857454 transitions. [2022-01-18 12:18:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-18 12:18:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:18:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:15,044 INFO L225 Difference]: With dead ends: 290438 [2022-01-18 12:18:15,044 INFO L226 Difference]: Without dead ends: 290333 [2022-01-18 12:18:15,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12966 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4741, Invalid=25709, Unknown=0, NotChecked=0, Total=30450 [2022-01-18 12:18:15,045 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1536 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:15,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 2030 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:18:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290333 states. [2022-01-18 12:18:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290333 to 210753. [2022-01-18 12:18:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210753 states, 210752 states have (on average 2.969181787124203) internal successors, (625761), 210752 states have internal predecessors, (625761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210753 states to 210753 states and 625761 transitions. [2022-01-18 12:18:22,365 INFO L78 Accepts]: Start accepts. Automaton has 210753 states and 625761 transitions. Word has length 77 [2022-01-18 12:18:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:22,365 INFO L470 AbstractCegarLoop]: Abstraction has 210753 states and 625761 transitions. [2022-01-18 12:18:22,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 210753 states and 625761 transitions. [2022-01-18 12:18:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:18:23,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:23,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:23,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:23,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:23,772 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 634657407, now seen corresponding path program 73 times [2022-01-18 12:18:23,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:23,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754390374] [2022-01-18 12:18:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:23,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:18:23,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754390374] [2022-01-18 12:18:23,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754390374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048079588] [2022-01-18 12:18:23,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:18:23,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:23,848 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:23,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 12:18:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:23,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:18:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:24,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:18:24,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048079588] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:24,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:24,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 23 [2022-01-18 12:18:24,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867011881] [2022-01-18 12:18:24,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:24,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:18:24,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:18:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:18:24,328 INFO L87 Difference]: Start difference. First operand 210753 states and 625761 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:27,652 INFO L93 Difference]: Finished difference Result 255728 states and 756243 transitions. [2022-01-18 12:18:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 12:18:27,653 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:18:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:28,488 INFO L225 Difference]: With dead ends: 255728 [2022-01-18 12:18:28,488 INFO L226 Difference]: Without dead ends: 255680 [2022-01-18 12:18:28,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6823 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2564, Invalid=14728, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 12:18:28,489 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1075 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:28,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 1813 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:18:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255680 states. [2022-01-18 12:18:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255680 to 210937. [2022-01-18 12:18:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210937 states, 210936 states have (on average 2.969426745553154) internal successors, (626359), 210936 states have internal predecessors, (626359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210937 states to 210937 states and 626359 transitions. [2022-01-18 12:18:35,586 INFO L78 Accepts]: Start accepts. Automaton has 210937 states and 626359 transitions. Word has length 77 [2022-01-18 12:18:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:35,586 INFO L470 AbstractCegarLoop]: Abstraction has 210937 states and 626359 transitions. [2022-01-18 12:18:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 210937 states and 626359 transitions. [2022-01-18 12:18:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:18:35,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:35,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:35,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:36,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-01-18 12:18:36,114 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1615888565, now seen corresponding path program 74 times [2022-01-18 12:18:36,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:36,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264787230] [2022-01-18 12:18:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:36,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:18:36,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264787230] [2022-01-18 12:18:36,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264787230] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046992616] [2022-01-18 12:18:36,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:18:36,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:36,178 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:36,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 12:18:36,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:18:36,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:18:36,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:36,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:18:36,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046992616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:36,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:36,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:18:36,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945911208] [2022-01-18 12:18:36,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:36,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:18:36,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:18:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:18:36,580 INFO L87 Difference]: Start difference. First operand 210937 states and 626359 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:41,185 INFO L93 Difference]: Finished difference Result 287870 states and 851018 transitions. [2022-01-18 12:18:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-18 12:18:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:18:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:42,742 INFO L225 Difference]: With dead ends: 287870 [2022-01-18 12:18:42,742 INFO L226 Difference]: Without dead ends: 287705 [2022-01-18 12:18:42,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13697 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4926, Invalid=27294, Unknown=0, NotChecked=0, Total=32220 [2022-01-18 12:18:42,744 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1498 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:42,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 2471 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:18:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287705 states. [2022-01-18 12:18:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287705 to 212673. [2022-01-18 12:18:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212673 states, 212672 states have (on average 2.9694035886247367) internal successors, (631509), 212672 states have internal predecessors, (631509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212673 states to 212673 states and 631509 transitions. [2022-01-18 12:18:50,215 INFO L78 Accepts]: Start accepts. Automaton has 212673 states and 631509 transitions. Word has length 77 [2022-01-18 12:18:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:50,216 INFO L470 AbstractCegarLoop]: Abstraction has 212673 states and 631509 transitions. [2022-01-18 12:18:50,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 212673 states and 631509 transitions. [2022-01-18 12:18:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:18:50,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:50,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:50,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:50,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:50,757 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1150109215, now seen corresponding path program 75 times [2022-01-18 12:18:50,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170955785] [2022-01-18 12:18:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:50,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:18:50,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:50,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170955785] [2022-01-18 12:18:50,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170955785] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:50,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388995956] [2022-01-18 12:18:50,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:18:50,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:50,844 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:50,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 12:18:51,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 12:18:51,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:51,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:18:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:52,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:18:52,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388995956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:52,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:52,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:18:52,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331273430] [2022-01-18 12:18:52,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:52,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:18:52,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:18:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:18:52,137 INFO L87 Difference]: Start difference. First operand 212673 states and 631509 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:55,886 INFO L93 Difference]: Finished difference Result 279494 states and 826877 transitions. [2022-01-18 12:18:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 12:18:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:18:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:56,869 INFO L225 Difference]: With dead ends: 279494 [2022-01-18 12:18:56,869 INFO L226 Difference]: Without dead ends: 279446 [2022-01-18 12:18:56,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7908 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2796, Invalid=17226, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 12:18:56,870 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1208 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:56,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 2341 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:18:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279446 states. [2022-01-18 12:19:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279446 to 209601. [2022-01-18 12:19:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209601 states, 209600 states have (on average 2.96981393129771) internal successors, (622473), 209600 states have internal predecessors, (622473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209601 states to 209601 states and 622473 transitions. [2022-01-18 12:19:04,433 INFO L78 Accepts]: Start accepts. Automaton has 209601 states and 622473 transitions. Word has length 77 [2022-01-18 12:19:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:04,433 INFO L470 AbstractCegarLoop]: Abstraction has 209601 states and 622473 transitions. [2022-01-18 12:19:04,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 209601 states and 622473 transitions. [2022-01-18 12:19:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:19:05,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:05,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:05,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:05,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:05,854 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1447803935, now seen corresponding path program 76 times [2022-01-18 12:19:05,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:05,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592109793] [2022-01-18 12:19:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:05,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:05,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592109793] [2022-01-18 12:19:05,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592109793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088597531] [2022-01-18 12:19:05,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:19:05,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:05,964 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:05,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 12:19:06,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:19:06,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:06,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:19:06,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:06,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:06,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088597531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:06,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:06,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:19:06,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484298246] [2022-01-18 12:19:06,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:06,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:19:06,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:19:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:19:06,479 INFO L87 Difference]: Start difference. First operand 209601 states and 622473 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:10,040 INFO L93 Difference]: Finished difference Result 251375 states and 744102 transitions. [2022-01-18 12:19:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-18 12:19:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:19:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:10,936 INFO L225 Difference]: With dead ends: 251375 [2022-01-18 12:19:10,936 INFO L226 Difference]: Without dead ends: 251303 [2022-01-18 12:19:10,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6000 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2274, Invalid=13476, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 12:19:10,937 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1016 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:10,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 2652 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:19:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251303 states. [2022-01-18 12:19:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251303 to 210737. [2022-01-18 12:19:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210737 states, 210736 states have (on average 2.969995634348189) internal successors, (625885), 210736 states have internal predecessors, (625885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210737 states to 210737 states and 625885 transitions. [2022-01-18 12:19:18,827 INFO L78 Accepts]: Start accepts. Automaton has 210737 states and 625885 transitions. Word has length 77 [2022-01-18 12:19:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:18,828 INFO L470 AbstractCegarLoop]: Abstraction has 210737 states and 625885 transitions. [2022-01-18 12:19:18,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 210737 states and 625885 transitions. [2022-01-18 12:19:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:19:19,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:19,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:19,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:19,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 12:19:19,354 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2110842859, now seen corresponding path program 77 times [2022-01-18 12:19:19,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:19,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026895178] [2022-01-18 12:19:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:19,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:19:19,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026895178] [2022-01-18 12:19:19,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026895178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318033234] [2022-01-18 12:19:19,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:19:19,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:19,464 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:19,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 12:19:19,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:19:19,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:19,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:19:19,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:19,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:19:20,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318033234] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:20,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:20,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:19:20,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907595891] [2022-01-18 12:19:20,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:20,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:19:20,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:19:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:19:20,059 INFO L87 Difference]: Start difference. First operand 210737 states and 625885 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:25,761 INFO L93 Difference]: Finished difference Result 250790 states and 741443 transitions. [2022-01-18 12:19:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-18 12:19:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:19:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:27,374 INFO L225 Difference]: With dead ends: 250790 [2022-01-18 12:19:27,374 INFO L226 Difference]: Without dead ends: 250730 [2022-01-18 12:19:27,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13905 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5514, Invalid=26348, Unknown=0, NotChecked=0, Total=31862 [2022-01-18 12:19:27,377 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1813 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:27,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 2636 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:19:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250730 states. [2022-01-18 12:19:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250730 to 212341. [2022-01-18 12:19:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212341 states, 212340 states have (on average 2.9701422247339173) internal successors, (630680), 212340 states have internal predecessors, (630680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212341 states to 212341 states and 630680 transitions. [2022-01-18 12:19:34,898 INFO L78 Accepts]: Start accepts. Automaton has 212341 states and 630680 transitions. Word has length 77 [2022-01-18 12:19:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:34,898 INFO L470 AbstractCegarLoop]: Abstraction has 212341 states and 630680 transitions. [2022-01-18 12:19:34,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 212341 states and 630680 transitions. [2022-01-18 12:19:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:19:35,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:35,214 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:35,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-18 12:19:35,415 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1645063509, now seen corresponding path program 78 times [2022-01-18 12:19:35,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:35,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509008203] [2022-01-18 12:19:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:35,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:19:35,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:35,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509008203] [2022-01-18 12:19:35,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509008203] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703464162] [2022-01-18 12:19:35,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:19:35,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:35,489 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:35,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 12:19:35,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:19:35,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:35,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:19:35,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:35,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:19:35,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703464162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:35,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:35,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2022-01-18 12:19:35,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847482087] [2022-01-18 12:19:35,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:35,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:19:35,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:19:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:19:35,945 INFO L87 Difference]: Start difference. First operand 212341 states and 630680 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:39,781 INFO L93 Difference]: Finished difference Result 248516 states and 734787 transitions. [2022-01-18 12:19:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 12:19:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:19:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:40,712 INFO L225 Difference]: With dead ends: 248516 [2022-01-18 12:19:40,712 INFO L226 Difference]: Without dead ends: 248468 [2022-01-18 12:19:40,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6855 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2768, Invalid=14788, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 12:19:40,713 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1207 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:40,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 2484 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:19:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248468 states. [2022-01-18 12:19:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248468 to 211653. [2022-01-18 12:19:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211653 states, 211652 states have (on average 2.9699506737474723) internal successors, (628596), 211652 states have internal predecessors, (628596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211653 states to 211653 states and 628596 transitions. [2022-01-18 12:19:47,893 INFO L78 Accepts]: Start accepts. Automaton has 211653 states and 628596 transitions. Word has length 77 [2022-01-18 12:19:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:47,893 INFO L470 AbstractCegarLoop]: Abstraction has 211653 states and 628596 transitions. [2022-01-18 12:19:47,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 211653 states and 628596 transitions. [2022-01-18 12:19:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:19:49,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:49,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:49,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:49,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:49,314 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1942758229, now seen corresponding path program 79 times [2022-01-18 12:19:49,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:49,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422620789] [2022-01-18 12:19:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:49,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:49,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422620789] [2022-01-18 12:19:49,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422620789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:49,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885562223] [2022-01-18 12:19:49,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:19:49,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:49,435 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:49,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 12:19:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:49,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:19:49,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:49,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:49,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885562223] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:49,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:49,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:19:49,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364009394] [2022-01-18 12:19:49,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:49,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:19:49,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:19:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:19:49,898 INFO L87 Difference]: Start difference. First operand 211653 states and 628596 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:53,232 INFO L93 Difference]: Finished difference Result 249835 states and 738614 transitions. [2022-01-18 12:19:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:19:53,233 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:19:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:54,010 INFO L225 Difference]: With dead ends: 249835 [2022-01-18 12:19:54,010 INFO L226 Difference]: Without dead ends: 249763 [2022-01-18 12:19:54,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5769 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2448, Invalid=12558, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 12:19:54,011 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1120 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:54,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2357 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:19:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249763 states. [2022-01-18 12:19:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249763 to 215809. [2022-01-18 12:20:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215809 states, 215808 states have (on average 2.970293038256228) internal successors, (641013), 215808 states have internal predecessors, (641013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215809 states to 215809 states and 641013 transitions. [2022-01-18 12:20:00,902 INFO L78 Accepts]: Start accepts. Automaton has 215809 states and 641013 transitions. Word has length 77 [2022-01-18 12:20:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:00,903 INFO L470 AbstractCegarLoop]: Abstraction has 215809 states and 641013 transitions. [2022-01-18 12:20:00,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 215809 states and 641013 transitions. [2022-01-18 12:20:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:01,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:01,219 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:01,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:01,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:01,420 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1709318439, now seen corresponding path program 80 times [2022-01-18 12:20:01,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:01,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24781890] [2022-01-18 12:20:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:01,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:01,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24781890] [2022-01-18 12:20:01,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24781890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824517656] [2022-01-18 12:20:01,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:20:01,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:01,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:01,516 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:01,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 12:20:01,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:20:01,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:01,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:01,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:01,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:01,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824517656] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:01,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:01,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:20:01,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78077489] [2022-01-18 12:20:01,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:01,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:20:01,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:20:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:20:01,978 INFO L87 Difference]: Start difference. First operand 215809 states and 641013 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:04,635 INFO L93 Difference]: Finished difference Result 234675 states and 694839 transitions. [2022-01-18 12:20:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:20:04,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:20:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:05,913 INFO L225 Difference]: With dead ends: 234675 [2022-01-18 12:20:05,913 INFO L226 Difference]: Without dead ends: 234627 [2022-01-18 12:20:05,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1158, Invalid=6324, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 12:20:05,913 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 804 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:05,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2023 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:20:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234627 states. [2022-01-18 12:20:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234627 to 215897. [2022-01-18 12:20:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215897 states, 215896 states have (on average 2.970351465520436) internal successors, (641287), 215896 states have internal predecessors, (641287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215897 states to 215897 states and 641287 transitions. [2022-01-18 12:20:12,078 INFO L78 Accepts]: Start accepts. Automaton has 215897 states and 641287 transitions. Word has length 77 [2022-01-18 12:20:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:12,078 INFO L470 AbstractCegarLoop]: Abstraction has 215897 states and 641287 transitions. [2022-01-18 12:20:12,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 215897 states and 641287 transitions. [2022-01-18 12:20:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:13,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:13,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:13,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:13,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:13,503 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1719725937, now seen corresponding path program 81 times [2022-01-18 12:20:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091157893] [2022-01-18 12:20:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:13,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:13,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091157893] [2022-01-18 12:20:13,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091157893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769042485] [2022-01-18 12:20:13,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:20:13,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:13,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:13,586 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:13,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 12:20:13,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 12:20:13,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:13,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:13,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:13,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769042485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:13,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:13,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-01-18 12:20:13,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846960564] [2022-01-18 12:20:13,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:13,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:20:13,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:20:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:20:13,960 INFO L87 Difference]: Start difference. First operand 215897 states and 641287 transitions. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:16,683 INFO L93 Difference]: Finished difference Result 222155 states and 658544 transitions. [2022-01-18 12:20:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:20:16,683 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:20:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:17,370 INFO L225 Difference]: With dead ends: 222155 [2022-01-18 12:20:17,370 INFO L226 Difference]: Without dead ends: 221915 [2022-01-18 12:20:17,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1289, Invalid=5851, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 12:20:17,371 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 716 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:17,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 2395 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:20:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221915 states. [2022-01-18 12:20:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221915 to 216129. [2022-01-18 12:20:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216129 states, 216128 states have (on average 2.970114931892212) internal successors, (641925), 216128 states have internal predecessors, (641925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216129 states to 216129 states and 641925 transitions. [2022-01-18 12:20:23,462 INFO L78 Accepts]: Start accepts. Automaton has 216129 states and 641925 transitions. Word has length 77 [2022-01-18 12:20:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:23,462 INFO L470 AbstractCegarLoop]: Abstraction has 216129 states and 641925 transitions. [2022-01-18 12:20:23,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 216129 states and 641925 transitions. [2022-01-18 12:20:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:24,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:24,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:24,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:24,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:24,839 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1928937225, now seen corresponding path program 82 times [2022-01-18 12:20:24,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:24,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131796492] [2022-01-18 12:20:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:24,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:24,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131796492] [2022-01-18 12:20:24,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131796492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:24,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155777624] [2022-01-18 12:20:24,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:20:24,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:24,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:24,924 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:24,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 12:20:25,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:20:25,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:25,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:25,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:25,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:25,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155777624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:25,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:25,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-01-18 12:20:25,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692705048] [2022-01-18 12:20:25,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:25,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:20:25,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:20:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:20:25,297 INFO L87 Difference]: Start difference. First operand 216129 states and 641925 transitions. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:27,996 INFO L93 Difference]: Finished difference Result 222672 states and 659822 transitions. [2022-01-18 12:20:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:20:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:20:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:28,738 INFO L225 Difference]: With dead ends: 222672 [2022-01-18 12:20:28,738 INFO L226 Difference]: Without dead ends: 222627 [2022-01-18 12:20:28,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1897, Invalid=8405, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 12:20:28,739 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1029 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:28,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1893 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:20:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222627 states. [2022-01-18 12:20:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222627 to 216153. [2022-01-18 12:20:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216153 states, 216152 states have (on average 2.970127502868352) internal successors, (641999), 216152 states have internal predecessors, (641999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216153 states to 216153 states and 641999 transitions. [2022-01-18 12:20:34,673 INFO L78 Accepts]: Start accepts. Automaton has 216153 states and 641999 transitions. Word has length 77 [2022-01-18 12:20:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:34,673 INFO L470 AbstractCegarLoop]: Abstraction has 216153 states and 641999 transitions. [2022-01-18 12:20:34,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 216153 states and 641999 transitions. [2022-01-18 12:20:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:35,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:35,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:35,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:35,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:35,213 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1463157875, now seen corresponding path program 83 times [2022-01-18 12:20:35,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:35,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712060365] [2022-01-18 12:20:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:35,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:36,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712060365] [2022-01-18 12:20:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712060365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319200160] [2022-01-18 12:20:36,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:20:36,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:36,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:36,101 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:36,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 12:20:36,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:20:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:36,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:36,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:36,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:36,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319200160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:36,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:36,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-01-18 12:20:36,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665418930] [2022-01-18 12:20:36,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:20:36,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:20:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:20:36,541 INFO L87 Difference]: Start difference. First operand 216153 states and 641999 transitions. Second operand has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:38,185 INFO L93 Difference]: Finished difference Result 221152 states and 655846 transitions. [2022-01-18 12:20:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 12:20:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:20:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:39,836 INFO L225 Difference]: With dead ends: 221152 [2022-01-18 12:20:39,836 INFO L226 Difference]: Without dead ends: 221128 [2022-01-18 12:20:39,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=812, Invalid=3744, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:20:39,837 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 809 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:39,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1489 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:20:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221128 states. [2022-01-18 12:20:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221128 to 216141. [2022-01-18 12:20:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216141 states, 216140 states have (on average 2.9701212177292495) internal successors, (641962), 216140 states have internal predecessors, (641962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216141 states to 216141 states and 641962 transitions. [2022-01-18 12:20:46,323 INFO L78 Accepts]: Start accepts. Automaton has 216141 states and 641962 transitions. Word has length 77 [2022-01-18 12:20:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:46,323 INFO L470 AbstractCegarLoop]: Abstraction has 216141 states and 641962 transitions. [2022-01-18 12:20:46,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 216141 states and 641962 transitions. [2022-01-18 12:20:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:46,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:46,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:46,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:46,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-01-18 12:20:46,841 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1911227973, now seen corresponding path program 84 times [2022-01-18 12:20:46,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290916258] [2022-01-18 12:20:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:46,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:46,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290916258] [2022-01-18 12:20:46,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290916258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658222511] [2022-01-18 12:20:46,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:20:46,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:46,917 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 12:20:47,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:20:47,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:47,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:47,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:47,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:47,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658222511] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:47,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:47,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-01-18 12:20:47,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752241939] [2022-01-18 12:20:47,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:47,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:20:47,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:20:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:20:47,284 INFO L87 Difference]: Start difference. First operand 216141 states and 641962 transitions. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:49,467 INFO L93 Difference]: Finished difference Result 220822 states and 654959 transitions. [2022-01-18 12:20:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:20:49,468 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:20:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:50,146 INFO L225 Difference]: With dead ends: 220822 [2022-01-18 12:20:50,146 INFO L226 Difference]: Without dead ends: 220687 [2022-01-18 12:20:50,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=551, Invalid=1999, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 12:20:50,147 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 528 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:50,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1548 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:20:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220687 states. [2022-01-18 12:20:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220687 to 216097. [2022-01-18 12:20:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216097 states, 216096 states have (on average 2.9700919961498595) internal successors, (641825), 216096 states have internal predecessors, (641825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216097 states to 216097 states and 641825 transitions. [2022-01-18 12:20:56,523 INFO L78 Accepts]: Start accepts. Automaton has 216097 states and 641825 transitions. Word has length 77 [2022-01-18 12:20:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:56,524 INFO L470 AbstractCegarLoop]: Abstraction has 216097 states and 641825 transitions. [2022-01-18 12:20:56,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 216097 states and 641825 transitions. [2022-01-18 12:20:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:20:56,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:56,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:56,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:57,034 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1425613745, now seen corresponding path program 85 times [2022-01-18 12:20:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787451081] [2022-01-18 12:20:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:57,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:57,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:57,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787451081] [2022-01-18 12:20:57,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787451081] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:57,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203489306] [2022-01-18 12:20:57,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:20:57,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:57,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:57,132 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:57,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 12:20:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:57,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:20:57,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:57,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:57,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203489306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:57,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:57,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:20:57,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154992981] [2022-01-18 12:20:57,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:57,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:20:57,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:20:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:20:57,627 INFO L87 Difference]: Start difference. First operand 216097 states and 641825 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:01,465 INFO L93 Difference]: Finished difference Result 229556 states and 679218 transitions. [2022-01-18 12:21:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 12:21:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:21:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:02,652 INFO L225 Difference]: With dead ends: 229556 [2022-01-18 12:21:02,653 INFO L226 Difference]: Without dead ends: 229136 [2022-01-18 12:21:02,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5757 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3085, Invalid=14737, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 12:21:02,654 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 809 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:02,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2666 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:21:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229136 states. [2022-01-18 12:21:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229136 to 218537. [2022-01-18 12:21:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218537 states, 218536 states have (on average 2.969135520005857) internal successors, (648863), 218536 states have internal predecessors, (648863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218537 states to 218537 states and 648863 transitions. [2022-01-18 12:21:08,681 INFO L78 Accepts]: Start accepts. Automaton has 218537 states and 648863 transitions. Word has length 77 [2022-01-18 12:21:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:08,681 INFO L470 AbstractCegarLoop]: Abstraction has 218537 states and 648863 transitions. [2022-01-18 12:21:08,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 218537 states and 648863 transitions. [2022-01-18 12:21:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:21:09,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:09,008 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:09,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:09,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:09,209 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:09,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:09,209 INFO L85 PathProgramCache]: Analyzing trace with hash -779309611, now seen corresponding path program 86 times [2022-01-18 12:21:09,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:09,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577659791] [2022-01-18 12:21:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:09,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:10,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577659791] [2022-01-18 12:21:10,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577659791] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695995714] [2022-01-18 12:21:10,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:10,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:10,095 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:10,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 12:21:10,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:10,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:21:10,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:10,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695995714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:10,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:10,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:21:10,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508003749] [2022-01-18 12:21:10,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:21:10,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:21:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:21:10,517 INFO L87 Difference]: Start difference. First operand 218537 states and 648863 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:13,987 INFO L93 Difference]: Finished difference Result 234952 states and 694621 transitions. [2022-01-18 12:21:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:21:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:21:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:14,743 INFO L225 Difference]: With dead ends: 234952 [2022-01-18 12:21:14,744 INFO L226 Difference]: Without dead ends: 234877 [2022-01-18 12:21:14,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3175, Invalid=14647, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 12:21:14,745 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 853 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:14,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2788 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:21:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234877 states. [2022-01-18 12:21:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234877 to 221305. [2022-01-18 12:21:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221305 states, 221304 states have (on average 2.9697746086830783) internal successors, (657223), 221304 states have internal predecessors, (657223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221305 states to 221305 states and 657223 transitions. [2022-01-18 12:21:21,831 INFO L78 Accepts]: Start accepts. Automaton has 221305 states and 657223 transitions. Word has length 77 [2022-01-18 12:21:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 221305 states and 657223 transitions. [2022-01-18 12:21:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 221305 states and 657223 transitions. [2022-01-18 12:21:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:21:22,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:22,182 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:22,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:22,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:22,382 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:22,383 INFO L85 PathProgramCache]: Analyzing trace with hash -313530261, now seen corresponding path program 87 times [2022-01-18 12:21:22,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:22,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792955170] [2022-01-18 12:21:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:22,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:22,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:22,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792955170] [2022-01-18 12:21:22,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792955170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:22,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908572862] [2022-01-18 12:21:22,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:21:22,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:22,461 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:22,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 12:21:22,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 12:21:22,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:22,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:21:22,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:22,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:22,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908572862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:22,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:21:22,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424703047] [2022-01-18 12:21:22,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:21:22,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:21:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:21:22,893 INFO L87 Difference]: Start difference. First operand 221305 states and 657223 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:26,287 INFO L93 Difference]: Finished difference Result 231713 states and 685850 transitions. [2022-01-18 12:21:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 12:21:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:21:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:27,032 INFO L225 Difference]: With dead ends: 231713 [2022-01-18 12:21:27,032 INFO L226 Difference]: Without dead ends: 231641 [2022-01-18 12:21:27,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4816 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2297, Invalid=12223, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 12:21:27,033 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 800 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:27,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 2869 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:21:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231641 states. [2022-01-18 12:21:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231641 to 221265. [2022-01-18 12:21:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221265 states, 221264 states have (on average 2.969633559910333) internal successors, (657073), 221264 states have internal predecessors, (657073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221265 states to 221265 states and 657073 transitions. [2022-01-18 12:21:33,679 INFO L78 Accepts]: Start accepts. Automaton has 221265 states and 657073 transitions. Word has length 77 [2022-01-18 12:21:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 221265 states and 657073 transitions. [2022-01-18 12:21:33,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 221265 states and 657073 transitions. [2022-01-18 12:21:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:21:34,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:34,011 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:34,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:34,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:34,211 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1295506767, now seen corresponding path program 88 times [2022-01-18 12:21:34,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418612119] [2022-01-18 12:21:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:34,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:34,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418612119] [2022-01-18 12:21:34,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418612119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228458177] [2022-01-18 12:21:34,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:21:34,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:34,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:34,287 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:34,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 12:21:34,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:21:34,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:34,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:21:34,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:34,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:34,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228458177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:34,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:34,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:21:34,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196633199] [2022-01-18 12:21:34,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:34,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:21:34,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:21:34,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:21:34,685 INFO L87 Difference]: Start difference. First operand 221265 states and 657073 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:38,307 INFO L93 Difference]: Finished difference Result 241421 states and 713959 transitions. [2022-01-18 12:21:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 12:21:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:21:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:39,633 INFO L225 Difference]: With dead ends: 241421 [2022-01-18 12:21:39,633 INFO L226 Difference]: Without dead ends: 240986 [2022-01-18 12:21:39,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4297 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2245, Invalid=11561, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 12:21:39,634 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 638 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:39,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 3107 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 12:21:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240986 states. [2022-01-18 12:21:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240986 to 226485. [2022-01-18 12:21:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226485 states, 226484 states have (on average 2.968651207149291) internal successors, (672352), 226484 states have internal predecessors, (672352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226485 states to 226485 states and 672352 transitions. [2022-01-18 12:21:45,800 INFO L78 Accepts]: Start accepts. Automaton has 226485 states and 672352 transitions. Word has length 77 [2022-01-18 12:21:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:45,800 INFO L470 AbstractCegarLoop]: Abstraction has 226485 states and 672352 transitions. [2022-01-18 12:21:45,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 226485 states and 672352 transitions. [2022-01-18 12:21:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:21:47,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:47,015 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:47,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:47,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:47,216 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -649202633, now seen corresponding path program 89 times [2022-01-18 12:21:47,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:47,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121012421] [2022-01-18 12:21:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:47,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:47,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121012421] [2022-01-18 12:21:47,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121012421] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54110524] [2022-01-18 12:21:47,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:21:47,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:47,290 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:47,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 12:21:47,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:21:47,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:21:47,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:47,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:47,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54110524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:47,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:47,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:21:47,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580055826] [2022-01-18 12:21:47,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:47,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:21:47,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:21:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:21:47,700 INFO L87 Difference]: Start difference. First operand 226485 states and 672352 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:51,655 INFO L93 Difference]: Finished difference Result 265772 states and 786440 transitions. [2022-01-18 12:21:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 12:21:51,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:21:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:53,033 INFO L225 Difference]: With dead ends: 265772 [2022-01-18 12:21:53,034 INFO L226 Difference]: Without dead ends: 265697 [2022-01-18 12:21:53,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4932 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2468, Invalid=12294, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 12:21:53,035 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 764 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 3020 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:21:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265697 states. [2022-01-18 12:21:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265697 to 238317. [2022-01-18 12:21:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238317 states, 238316 states have (on average 2.970786686584199) internal successors, (707986), 238316 states have internal predecessors, (707986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238317 states to 238317 states and 707986 transitions. [2022-01-18 12:22:00,529 INFO L78 Accepts]: Start accepts. Automaton has 238317 states and 707986 transitions. Word has length 77 [2022-01-18 12:22:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:00,529 INFO L470 AbstractCegarLoop]: Abstraction has 238317 states and 707986 transitions. [2022-01-18 12:22:00,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 238317 states and 707986 transitions. [2022-01-18 12:22:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:22:01,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:01,839 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:01,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:02,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-01-18 12:22:02,041 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -183423283, now seen corresponding path program 90 times [2022-01-18 12:22:02,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:02,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601445482] [2022-01-18 12:22:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:02,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:02,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601445482] [2022-01-18 12:22:02,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601445482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158611900] [2022-01-18 12:22:02,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:22:02,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:02,116 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:02,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 12:22:02,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:22:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:02,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:22:02,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:02,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158611900] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:02,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:02,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-18 12:22:02,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732568254] [2022-01-18 12:22:02,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:02,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:22:02,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:22:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:22:02,517 INFO L87 Difference]: Start difference. First operand 238317 states and 707986 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:05,634 INFO L93 Difference]: Finished difference Result 258315 states and 765331 transitions. [2022-01-18 12:22:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 12:22:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:22:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:06,524 INFO L225 Difference]: With dead ends: 258315 [2022-01-18 12:22:06,524 INFO L226 Difference]: Without dead ends: 258267 [2022-01-18 12:22:06,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1746, Invalid=9596, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:22:06,525 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 622 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:06,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2733 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258267 states. [2022-01-18 12:22:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258267 to 238149. [2022-01-18 12:22:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238149 states, 238148 states have (on average 2.9703041805935806) internal successors, (707372), 238148 states have internal predecessors, (707372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238149 states to 238149 states and 707372 transitions. [2022-01-18 12:22:13,528 INFO L78 Accepts]: Start accepts. Automaton has 238149 states and 707372 transitions. Word has length 77 [2022-01-18 12:22:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:13,528 INFO L470 AbstractCegarLoop]: Abstraction has 238149 states and 707372 transitions. [2022-01-18 12:22:13,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 238149 states and 707372 transitions. [2022-01-18 12:22:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:22:13,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:13,925 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:13,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:14,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-01-18 12:22:14,135 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -374353777, now seen corresponding path program 91 times [2022-01-18 12:22:14,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057251530] [2022-01-18 12:22:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:14,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:14,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:14,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057251530] [2022-01-18 12:22:14,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057251530] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:14,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358677603] [2022-01-18 12:22:14,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:22:14,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:14,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:14,209 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:14,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 12:22:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:14,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:22:14,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:14,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:14,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358677603] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:14,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:14,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:22:14,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359544422] [2022-01-18 12:22:14,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:14,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:22:14,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:22:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:22:14,612 INFO L87 Difference]: Start difference. First operand 238149 states and 707372 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:18,306 INFO L93 Difference]: Finished difference Result 253045 states and 749215 transitions. [2022-01-18 12:22:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 12:22:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:22:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:19,207 INFO L225 Difference]: With dead ends: 253045 [2022-01-18 12:22:19,207 INFO L226 Difference]: Without dead ends: 252670 [2022-01-18 12:22:19,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1348, Invalid=6842, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 12:22:19,208 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 515 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:19,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 2430 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252670 states. [2022-01-18 12:22:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252670 to 241269. [2022-01-18 12:22:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241269 states, 241268 states have (on average 2.969096606263574) internal successors, (716348), 241268 states have internal predecessors, (716348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241269 states to 241269 states and 716348 transitions. [2022-01-18 12:22:26,429 INFO L78 Accepts]: Start accepts. Automaton has 241269 states and 716348 transitions. Word has length 77 [2022-01-18 12:22:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:26,429 INFO L470 AbstractCegarLoop]: Abstraction has 241269 states and 716348 transitions. [2022-01-18 12:22:26,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 241269 states and 716348 transitions. [2022-01-18 12:22:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:22:26,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:26,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:26,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:27,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 12:22:27,061 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash 271950357, now seen corresponding path program 92 times [2022-01-18 12:22:27,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:27,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341770129] [2022-01-18 12:22:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:27,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:27,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:27,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341770129] [2022-01-18 12:22:27,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341770129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:27,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103001505] [2022-01-18 12:22:27,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:27,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:27,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:27,138 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:27,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 12:22:27,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:27,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:27,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:22:27,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:27,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103001505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:27,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:27,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:22:27,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765664895] [2022-01-18 12:22:27,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:27,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:22:27,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:22:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:22:27,544 INFO L87 Difference]: Start difference. First operand 241269 states and 716348 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:31,593 INFO L93 Difference]: Finished difference Result 311106 states and 922338 transitions. [2022-01-18 12:22:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:22:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:22:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:32,745 INFO L225 Difference]: With dead ends: 311106 [2022-01-18 12:22:32,746 INFO L226 Difference]: Without dead ends: 311001 [2022-01-18 12:22:32,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1851, Invalid=9069, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 12:22:32,746 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 759 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:32,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 2669 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311001 states. [2022-01-18 12:22:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311001 to 287617. [2022-01-18 12:22:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287617 states, 287616 states have (on average 2.9759714341344012) internal successors, (855937), 287616 states have internal predecessors, (855937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287617 states to 287617 states and 855937 transitions. [2022-01-18 12:22:41,587 INFO L78 Accepts]: Start accepts. Automaton has 287617 states and 855937 transitions. Word has length 77 [2022-01-18 12:22:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:41,587 INFO L470 AbstractCegarLoop]: Abstraction has 287617 states and 855937 transitions. [2022-01-18 12:22:41,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 287617 states and 855937 transitions. [2022-01-18 12:22:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:22:42,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:42,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:43,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 12:22:43,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 12:22:43,195 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash 737729707, now seen corresponding path program 93 times [2022-01-18 12:22:43,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:43,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286885997] [2022-01-18 12:22:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:43,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:43,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286885997] [2022-01-18 12:22:43,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286885997] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:43,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143534863] [2022-01-18 12:22:43,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:43,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:43,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:43,296 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:43,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 12:22:43,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 12:22:43,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:43,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:22:43,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143534863] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:43,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:43,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:22:43,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66379666] [2022-01-18 12:22:43,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:43,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:22:43,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:22:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:22:43,764 INFO L87 Difference]: Start difference. First operand 287617 states and 855937 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:46,836 INFO L93 Difference]: Finished difference Result 304124 states and 902612 transitions. [2022-01-18 12:22:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 12:22:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:22:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:47,825 INFO L225 Difference]: With dead ends: 304124 [2022-01-18 12:22:47,825 INFO L226 Difference]: Without dead ends: 304052 [2022-01-18 12:22:47,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1286, Invalid=6546, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 12:22:47,826 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 578 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:47,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2673 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304052 states. [2022-01-18 12:22:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304052 to 287505. [2022-01-18 12:22:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287505 states, 287504 states have (on average 2.9755864266236296) internal successors, (855493), 287504 states have internal predecessors, (855493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287505 states to 287505 states and 855493 transitions. [2022-01-18 12:22:56,497 INFO L78 Accepts]: Start accepts. Automaton has 287505 states and 855493 transitions. Word has length 77 [2022-01-18 12:22:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 287505 states and 855493 transitions. [2022-01-18 12:22:56,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 287505 states and 855493 transitions. [2022-01-18 12:22:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:22:57,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:57,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:57,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:58,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:58,131 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1995139221, now seen corresponding path program 94 times [2022-01-18 12:22:58,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913798574] [2022-01-18 12:22:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:58,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:58,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:58,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913798574] [2022-01-18 12:22:58,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913798574] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:58,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932012920] [2022-01-18 12:22:58,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:22:58,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:58,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:58,228 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:58,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 12:22:58,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:22:58,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:22:58,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:58,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:58,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932012920] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:58,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:58,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:22:58,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800132954] [2022-01-18 12:22:58,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:58,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:22:58,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:22:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:22:58,685 INFO L87 Difference]: Start difference. First operand 287505 states and 855493 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:02,589 INFO L93 Difference]: Finished difference Result 341227 states and 1012531 transitions. [2022-01-18 12:23:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 12:23:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:23:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:04,264 INFO L225 Difference]: With dead ends: 341227 [2022-01-18 12:23:04,264 INFO L226 Difference]: Without dead ends: 341152 [2022-01-18 12:23:04,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2692 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1327, Invalid=7229, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 12:23:04,265 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 577 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:04,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2225 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341152 states. [2022-01-18 12:23:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341152 to 307833. [2022-01-18 12:23:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307833 states, 307832 states have (on average 2.9741514852257076) internal successors, (915539), 307832 states have internal predecessors, (915539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307833 states to 307833 states and 915539 transitions. [2022-01-18 12:23:14,186 INFO L78 Accepts]: Start accepts. Automaton has 307833 states and 915539 transitions. Word has length 77 [2022-01-18 12:23:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:14,186 INFO L470 AbstractCegarLoop]: Abstraction has 307833 states and 915539 transitions. [2022-01-18 12:23:14,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 307833 states and 915539 transitions. [2022-01-18 12:23:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:23:15,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:15,605 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:15,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:15,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:15,805 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1834048725, now seen corresponding path program 95 times [2022-01-18 12:23:15,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:15,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331909119] [2022-01-18 12:23:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:15,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:15,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331909119] [2022-01-18 12:23:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331909119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717448401] [2022-01-18 12:23:15,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:23:15,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:15,908 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:15,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 12:23:16,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 12:23:16,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:16,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:23:16,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:16,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:16,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717448401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:16,323 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:23:16,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304963799] [2022-01-18 12:23:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:23:16,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:23:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:23:16,324 INFO L87 Difference]: Start difference. First operand 307833 states and 915539 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:19,380 INFO L93 Difference]: Finished difference Result 336059 states and 997939 transitions. [2022-01-18 12:23:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 12:23:19,381 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:23:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:20,514 INFO L225 Difference]: With dead ends: 336059 [2022-01-18 12:23:20,514 INFO L226 Difference]: Without dead ends: 336011 [2022-01-18 12:23:20,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1023, Invalid=5619, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:23:20,514 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 532 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:20,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2481 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336011 states. [2022-01-18 12:23:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336011 to 318833. [2022-01-18 12:23:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318833 states, 318832 states have (on average 2.9745477241933056) internal successors, (948381), 318832 states have internal predecessors, (948381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318833 states to 318833 states and 948381 transitions. [2022-01-18 12:23:30,443 INFO L78 Accepts]: Start accepts. Automaton has 318833 states and 948381 transitions. Word has length 77 [2022-01-18 12:23:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:30,443 INFO L470 AbstractCegarLoop]: Abstraction has 318833 states and 948381 transitions. [2022-01-18 12:23:30,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 318833 states and 948381 transitions. [2022-01-18 12:23:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:23:31,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:31,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:31,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 12:23:32,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-18 12:23:32,146 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash 210372599, now seen corresponding path program 96 times [2022-01-18 12:23:32,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:32,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359612377] [2022-01-18 12:23:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:32,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:32,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359612377] [2022-01-18 12:23:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359612377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951485727] [2022-01-18 12:23:32,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:23:32,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:32,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:32,233 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:32,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 12:23:32,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 12:23:32,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:32,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:23:32,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:32,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:32,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951485727] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:32,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:32,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:23:32,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933657809] [2022-01-18 12:23:32,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:32,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:23:32,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:23:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:23:32,640 INFO L87 Difference]: Start difference. First operand 318833 states and 948381 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:35,706 INFO L93 Difference]: Finished difference Result 335718 states and 996586 transitions. [2022-01-18 12:23:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 12:23:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:23:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:37,403 INFO L225 Difference]: With dead ends: 335718 [2022-01-18 12:23:37,403 INFO L226 Difference]: Without dead ends: 335658 [2022-01-18 12:23:37,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1100, Invalid=5380, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 12:23:37,404 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 574 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:37,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2284 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335658 states. [2022-01-18 12:23:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335658 to 320049. [2022-01-18 12:23:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320049 states, 320048 states have (on average 2.974244488326751) internal successors, (951901), 320048 states have internal predecessors, (951901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320049 states to 320049 states and 951901 transitions. [2022-01-18 12:23:47,569 INFO L78 Accepts]: Start accepts. Automaton has 320049 states and 951901 transitions. Word has length 77 [2022-01-18 12:23:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:47,569 INFO L470 AbstractCegarLoop]: Abstraction has 320049 states and 951901 transitions. [2022-01-18 12:23:47,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 320049 states and 951901 transitions. [2022-01-18 12:23:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:23:48,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:48,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:48,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 12:23:48,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 12:23:48,333 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 676151949, now seen corresponding path program 97 times [2022-01-18 12:23:48,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:48,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13672355] [2022-01-18 12:23:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:48,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:48,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:48,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13672355] [2022-01-18 12:23:48,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13672355] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:48,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256542278] [2022-01-18 12:23:48,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:23:48,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:48,427 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:48,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 12:23:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:23:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:48,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:48,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256542278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:48,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:48,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-01-18 12:23:48,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548196388] [2022-01-18 12:23:48,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:48,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:23:48,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:23:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:23:48,835 INFO L87 Difference]: Start difference. First operand 320049 states and 951901 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:51,727 INFO L93 Difference]: Finished difference Result 335273 states and 995494 transitions. [2022-01-18 12:23:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:23:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 12:23:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:53,429 INFO L225 Difference]: With dead ends: 335273 [2022-01-18 12:23:53,429 INFO L226 Difference]: Without dead ends: 335225 [2022-01-18 12:23:53,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=747, Invalid=3413, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:23:53,429 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 518 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:53,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1992 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335225 states. Received shutdown request... [2022-01-18 12:23:58,862 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:23:58,863 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:23:59,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2022-01-18 12:23:59,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 12:24:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335225 to 319629. [2022-01-18 12:24:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319629 states, 319628 states have (on average 2.9742262880598695) internal successors, (950646), 319628 states have internal predecessors, (950646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:01,838 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:24:01,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 12:24:01,839 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2022-01-18 12:24:01,848 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:24:01,848 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:24:01,860 INFO L732 BasicCegarLoop]: Path program histogram: [97, 10, 1, 1] [2022-01-18 12:24:01,862 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:24:01,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:24:01,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:24:01 BasicIcfg [2022-01-18 12:24:01,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:24:01,869 INFO L158 Benchmark]: Toolchain (without parser) took 660047.08ms. Allocated memory was 335.5MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 280.3MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 335.5MB. Free memory is still 296.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.13ms. Allocated memory was 335.5MB in the beginning and 448.8MB in the end (delta: 113.2MB). Free memory was 280.2MB in the beginning and 421.3MB in the end (delta: -141.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.57ms. Allocated memory is still 448.8MB. Free memory was 421.3MB in the beginning and 420.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: Boogie Preprocessor took 25.02ms. Allocated memory is still 448.8MB. Free memory was 420.2MB in the beginning and 418.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: RCFGBuilder took 384.11ms. Allocated memory is still 448.8MB. Free memory was 417.8MB in the beginning and 403.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 12:24:01,869 INFO L158 Benchmark]: TraceAbstraction took 659387.04ms. Allocated memory was 448.8MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 403.4MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. [2022-01-18 12:24:01,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 335.5MB. Free memory is still 296.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 215.13ms. Allocated memory was 335.5MB in the beginning and 448.8MB in the end (delta: 113.2MB). Free memory was 280.2MB in the beginning and 421.3MB in the end (delta: -141.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.57ms. Allocated memory is still 448.8MB. Free memory was 421.3MB in the beginning and 420.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.02ms. Allocated memory is still 448.8MB. Free memory was 420.2MB in the beginning and 418.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 384.11ms. Allocated memory is still 448.8MB. Free memory was 417.8MB in the beginning and 403.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 659387.04ms. Allocated memory was 448.8MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 403.4MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 7.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 659.3s, OverallIterations: 109, TraceHistogramMax: 3, PathProgramHistogramMax: 97, EmptinessCheckTime: 26.2s, AutomataDifference: 257.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77774 SdHoareTripleChecker+Valid, 42.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77774 mSDsluCounter, 188974 SdHoareTripleChecker+Invalid, 34.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 195355 mSDsCounter, 9313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104102 IncrementalHoareTripleChecker+Invalid, 113415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9313 mSolverCounterUnsat, 17231 mSDtfsCounter, 104102 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22421 GetRequests, 13003 SyntacticMatches, 103 SemanticMatches, 9315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418075 ImplicationChecksByTransitivity, 105.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320049occurred in iteration=108, InterpolantAutomatonStates: 8329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 303.2s AutomataMinimizationTime, 109 MinimizatonAttempts, 1958227 StatesRemovedByMinimization, 107 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 41.2s InterpolantComputationTime, 14710 NumberOfCodeBlocks, 14630 NumberOfCodeBlocksAsserted, 360 NumberOfCheckSat, 21396 ConstructedInterpolants, 0 QuantifiedInterpolants, 47952 SizeOfPredicates, 982 NumberOfNonLiveVariables, 16144 ConjunctsInSsa, 995 ConjunctsInUnsatCore, 301 InterpolantComputations, 13 PerfectInterpolantSequences, 3086/5139 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown