/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-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:48:43,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:48:43,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:48:43,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:48:43,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:48:43,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:48:43,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:48:43,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:48:43,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:48:43,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:48:43,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:48:43,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:48:43,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:48:43,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:48:43,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:48:43,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:48:43,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:48:43,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:48:43,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:48:43,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:48:43,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:48:43,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:48:43,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:48:43,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:48:43,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 12:48:43,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:48:43,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:48:43,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:48:43,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:48:43,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:48:43,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:48:43,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:48:43,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:48:43,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:48:43,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:48:43,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:48:43,630 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 12:48:43,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:48:43,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:48:43,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:48:43,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:48:43,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:48:43,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:48:43,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:48:43,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:48:43,665 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:48:43,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:48:43,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:48:43,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:48:43,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:48:43,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:48:43,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:48:43,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:48:43,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:48:43,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:48:43,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:48:43,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:48:43,670 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:48:43,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:48:43,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:48:43,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:48:43,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:48:43,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:48:43,910 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:48:43,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-01-18 12:48:43,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5369a6b52/c480a6a3efc4435fabd479d7d79e457b/FLAG30d623a53 [2022-01-18 12:48:44,344 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:48:44,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-01-18 12:48:44,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5369a6b52/c480a6a3efc4435fabd479d7d79e457b/FLAG30d623a53 [2022-01-18 12:48:44,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5369a6b52/c480a6a3efc4435fabd479d7d79e457b [2022-01-18 12:48:44,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:48:44,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:48:44,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:48:44,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:48:44,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:48:44,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:44,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f82a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44, skipping insertion in model container [2022-01-18 12:48:44,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:44,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:48:44,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:48:44,937 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-mult-equiv.wvr.c[2591,2604] [2022-01-18 12:48:44,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:48:44,946 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:48:44,964 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-mult-equiv.wvr.c[2591,2604] [2022-01-18 12:48:44,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:48:44,976 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:48:44,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44 WrapperNode [2022-01-18 12:48:44,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:48:44,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:48:44,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:48:44,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:48:44,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,023 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-01-18 12:48:45,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:48:45,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:48:45,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:48:45,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:48:45,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:48:45,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:48:45,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:48:45,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:48:45,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (1/1) ... [2022-01-18 12:48:45,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:48:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:45,090 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 12:48:45,092 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 12:48:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:48:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:48:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:48:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:48:45,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 12:48:45,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:48:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:48:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:48:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:48:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:48:45,121 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 12:48:45,192 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:48:45,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:48:45,447 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:48:45,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:48:45,489 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 12:48:45,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:48:45 BoogieIcfgContainer [2022-01-18 12:48:45,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:48:45,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:48:45,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:48:45,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:48:45,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:48:44" (1/3) ... [2022-01-18 12:48:45,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6899e30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:48:45, skipping insertion in model container [2022-01-18 12:48:45,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:48:44" (2/3) ... [2022-01-18 12:48:45,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6899e30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:48:45, skipping insertion in model container [2022-01-18 12:48:45,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:48:45" (3/3) ... [2022-01-18 12:48:45,519 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-01-18 12:48:45,523 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:48:45,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:48:45,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:48:45,524 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:48:45,588 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,589 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,589 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,589 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,590 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,590 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,592 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,592 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,592 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,593 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,593 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,593 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,604 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,605 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,606 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,606 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,606 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,606 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,614 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,614 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,614 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:48:45,622 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 12:48:45,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:48:45,685 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 12:48:45,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 12:48:45,701 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 97 transitions, 218 flow [2022-01-18 12:48:45,816 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 12:48:45,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:45,852 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:45,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash -602689982, now seen corresponding path program 1 times [2022-01-18 12:48:45,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:45,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974669076] [2022-01-18 12:48:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:45,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:46,084 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 12:48:46,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:46,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974669076] [2022-01-18 12:48:46,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974669076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:46,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:46,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:48:46,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829157201] [2022-01-18 12:48:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:46,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:48:46,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:48:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:48:46,132 INFO L87 Difference]: Start difference. First operand has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 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 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:46,212 INFO L93 Difference]: Finished difference Result 1475 states and 5025 transitions. [2022-01-18 12:48:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:48:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-18 12:48:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:46,249 INFO L225 Difference]: With dead ends: 1475 [2022-01-18 12:48:46,249 INFO L226 Difference]: Without dead ends: 1474 [2022-01-18 12:48:46,251 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 12:48:46,255 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:46,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:48:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-01-18 12:48:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2022-01-18 12:48:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.4107264086897486) internal successors, (5024), 1473 states have internal predecessors, (5024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5024 transitions. [2022-01-18 12:48:46,386 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5024 transitions. Word has length 70 [2022-01-18 12:48:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:46,386 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5024 transitions. [2022-01-18 12:48:46,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5024 transitions. [2022-01-18 12:48:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 12:48:46,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:46,395 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:48:46,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash -160747741, now seen corresponding path program 1 times [2022-01-18 12:48:46,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:46,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030440124] [2022-01-18 12:48:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:46,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:46,653 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 12:48:46,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:46,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030440124] [2022-01-18 12:48:46,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030440124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:46,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:46,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:48:46,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977550675] [2022-01-18 12:48:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:46,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:46,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:48:46,657 INFO L87 Difference]: Start difference. First operand 1474 states and 5024 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:46,794 INFO L93 Difference]: Finished difference Result 3359 states and 11654 transitions. [2022-01-18 12:48:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:48:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-18 12:48:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:46,818 INFO L225 Difference]: With dead ends: 3359 [2022-01-18 12:48:46,818 INFO L226 Difference]: Without dead ends: 3209 [2022-01-18 12:48:46,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:48:46,823 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 98 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:46,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 278 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-01-18 12:48:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1970. [2022-01-18 12:48:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.404773996952768) internal successors, (6704), 1969 states have internal predecessors, (6704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 6704 transitions. [2022-01-18 12:48:46,904 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 6704 transitions. Word has length 70 [2022-01-18 12:48:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:46,906 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 6704 transitions. [2022-01-18 12:48:46,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 6704 transitions. [2022-01-18 12:48:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:48:46,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:46,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:48:46,916 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2065297183, now seen corresponding path program 1 times [2022-01-18 12:48:46,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:46,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062959534] [2022-01-18 12:48:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:46,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:47,133 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 12:48:47,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062959534] [2022-01-18 12:48:47,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062959534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:47,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:47,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:48:47,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349628992] [2022-01-18 12:48:47,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:47,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:47,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:48:47,136 INFO L87 Difference]: Start difference. First operand 1970 states and 6704 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:47,410 INFO L93 Difference]: Finished difference Result 2821 states and 9362 transitions. [2022-01-18 12:48:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 12:48:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:47,428 INFO L225 Difference]: With dead ends: 2821 [2022-01-18 12:48:47,428 INFO L226 Difference]: Without dead ends: 2719 [2022-01-18 12:48:47,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:48:47,434 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 153 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:47,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 409 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:48:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2022-01-18 12:48:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2089. [2022-01-18 12:48:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 3.3630268199233715) internal successors, (7022), 2088 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 7022 transitions. [2022-01-18 12:48:47,524 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 7022 transitions. Word has length 72 [2022-01-18 12:48:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:47,525 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 7022 transitions. [2022-01-18 12:48:47,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 7022 transitions. [2022-01-18 12:48:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:48:47,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:47,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:47,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:48:47,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1196970611, now seen corresponding path program 2 times [2022-01-18 12:48:47,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:47,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923612945] [2022-01-18 12:48:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:47,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:47,704 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 12:48:47,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923612945] [2022-01-18 12:48:47,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923612945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:47,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:47,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:48:47,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444473582] [2022-01-18 12:48:47,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:47,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:47,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:48:47,707 INFO L87 Difference]: Start difference. First operand 2089 states and 7022 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:47,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:47,925 INFO L93 Difference]: Finished difference Result 4602 states and 15746 transitions. [2022-01-18 12:48:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:48:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:47,964 INFO L225 Difference]: With dead ends: 4602 [2022-01-18 12:48:47,964 INFO L226 Difference]: Without dead ends: 4602 [2022-01-18 12:48:47,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:48:47,965 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 170 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:47,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 413 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-01-18 12:48:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 2241. [2022-01-18 12:48:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2240 states have (on average 3.421875) internal successors, (7665), 2240 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 7665 transitions. [2022-01-18 12:48:48,055 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 7665 transitions. Word has length 72 [2022-01-18 12:48:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:48,056 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 7665 transitions. [2022-01-18 12:48:48,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 12:48:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 7665 transitions. [2022-01-18 12:48:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:48:48,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:48,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:48,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:48:48,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash -115985947, now seen corresponding path program 3 times [2022-01-18 12:48:48,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:48,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766392812] [2022-01-18 12:48:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:48,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:48,144 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 12:48:48,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766392812] [2022-01-18 12:48:48,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766392812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:48,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:48,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:48,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488720690] [2022-01-18 12:48:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:48,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:48,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:48,146 INFO L87 Difference]: Start difference. First operand 2241 states and 7665 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 12:48:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:48,255 INFO L93 Difference]: Finished difference Result 3069 states and 10661 transitions. [2022-01-18 12:48:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:48:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 12:48:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:48,273 INFO L225 Difference]: With dead ends: 3069 [2022-01-18 12:48:48,274 INFO L226 Difference]: Without dead ends: 3069 [2022-01-18 12:48:48,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 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 12:48:48,275 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 49 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:48,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 288 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:48,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2022-01-18 12:48:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2265. [2022-01-18 12:48:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2264 states have (on average 3.4253533568904593) internal successors, (7755), 2264 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 7755 transitions. [2022-01-18 12:48:48,352 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 7755 transitions. Word has length 72 [2022-01-18 12:48:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:48,353 INFO L470 AbstractCegarLoop]: Abstraction has 2265 states and 7755 transitions. [2022-01-18 12:48:48,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 12:48:48,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 7755 transitions. [2022-01-18 12:48:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:48:48,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:48,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:48,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:48:48,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash -6011481, now seen corresponding path program 4 times [2022-01-18 12:48:48,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:48,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108704956] [2022-01-18 12:48:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:48,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:48,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:48,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108704956] [2022-01-18 12:48:48,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108704956] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:48,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965291319] [2022-01-18 12:48:48,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:48:48,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:48,451 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 12:48:48,474 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 12:48:48,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:48:48,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 12:48:48,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:48,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:49,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965291319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:48:49,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:48:49,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 12:48:49,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245713660] [2022-01-18 12:48:49,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:48:49,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 12:48:49,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 12:48:49,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:48:49,019 INFO L87 Difference]: Start difference. First operand 2265 states and 7755 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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 12:48:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:49,258 INFO L93 Difference]: Finished difference Result 4858 states and 16942 transitions. [2022-01-18 12:48:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 12:48:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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 72 [2022-01-18 12:48:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:49,285 INFO L225 Difference]: With dead ends: 4858 [2022-01-18 12:48:49,286 INFO L226 Difference]: Without dead ends: 4858 [2022-01-18 12:48:49,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:48:49,290 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 161 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:49,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 586 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2022-01-18 12:48:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 2293. [2022-01-18 12:48:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2292 states have (on average 3.4363001745200696) internal successors, (7876), 2292 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 7876 transitions. [2022-01-18 12:48:49,442 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 7876 transitions. Word has length 72 [2022-01-18 12:48:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 2293 states and 7876 transitions. [2022-01-18 12:48:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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 12:48:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 7876 transitions. [2022-01-18 12:48:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:49,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:49,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:49,482 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 12:48:49,675 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,SelfDestructingSolverStorable5 [2022-01-18 12:48:49,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -594145936, now seen corresponding path program 1 times [2022-01-18 12:48:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:49,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251639375] [2022-01-18 12:48:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:49,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:49,780 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 12:48:49,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:49,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251639375] [2022-01-18 12:48:49,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251639375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:49,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:49,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:49,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757783875] [2022-01-18 12:48:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:49,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:49,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:49,785 INFO L87 Difference]: Start difference. First operand 2293 states and 7876 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:49,886 INFO L93 Difference]: Finished difference Result 3761 states and 12610 transitions. [2022-01-18 12:48:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:48:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:49,899 INFO L225 Difference]: With dead ends: 3761 [2022-01-18 12:48:49,900 INFO L226 Difference]: Without dead ends: 3587 [2022-01-18 12:48:49,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:48:49,900 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 155 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:49,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 301 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2022-01-18 12:48:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 2647. [2022-01-18 12:48:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2646 states have (on average 3.4845049130763415) internal successors, (9220), 2646 states have internal predecessors, (9220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 9220 transitions. [2022-01-18 12:48:49,977 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 9220 transitions. Word has length 73 [2022-01-18 12:48:49,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:49,977 INFO L470 AbstractCegarLoop]: Abstraction has 2647 states and 9220 transitions. [2022-01-18 12:48:49,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 9220 transitions. [2022-01-18 12:48:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:49,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:49,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:49,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:48:49,985 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -285034558, now seen corresponding path program 1 times [2022-01-18 12:48:49,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732787654] [2022-01-18 12:48:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:49,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:50,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732787654] [2022-01-18 12:48:50,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732787654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431850121] [2022-01-18 12:48:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:50,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:50,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:50,085 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 12:48:50,112 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 12:48:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:50,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:48:50,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:50,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:51,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431850121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:48:51,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:48:51,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2022-01-18 12:48:51,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750732595] [2022-01-18 12:48:51,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:48:51,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:48:51,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:48:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:48:51,078 INFO L87 Difference]: Start difference. First operand 2647 states and 9220 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:51,563 INFO L93 Difference]: Finished difference Result 6767 states and 23580 transitions. [2022-01-18 12:48:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 12:48:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:51,588 INFO L225 Difference]: With dead ends: 6767 [2022-01-18 12:48:51,588 INFO L226 Difference]: Without dead ends: 6359 [2022-01-18 12:48:51,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:48:51,589 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 502 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:51,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 861 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:48:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2022-01-18 12:48:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 3364. [2022-01-18 12:48:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3363 states have (on average 3.5985727029438004) internal successors, (12102), 3363 states have internal predecessors, (12102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 12102 transitions. [2022-01-18 12:48:51,713 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 12102 transitions. Word has length 73 [2022-01-18 12:48:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:51,713 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 12102 transitions. [2022-01-18 12:48:51,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 12102 transitions. [2022-01-18 12:48:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:51,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:51,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:51,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 12:48:51,947 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,SelfDestructingSolverStorable7 [2022-01-18 12:48:51,948 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash 537328358, now seen corresponding path program 2 times [2022-01-18 12:48:51,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:51,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300123868] [2022-01-18 12:48:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:51,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:52,073 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 12:48:52,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:52,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300123868] [2022-01-18 12:48:52,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300123868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:52,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:52,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:52,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254109694] [2022-01-18 12:48:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:52,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:52,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:52,076 INFO L87 Difference]: Start difference. First operand 3364 states and 12102 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:52,173 INFO L93 Difference]: Finished difference Result 4306 states and 15080 transitions. [2022-01-18 12:48:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:48:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:52,196 INFO L225 Difference]: With dead ends: 4306 [2022-01-18 12:48:52,196 INFO L226 Difference]: Without dead ends: 4270 [2022-01-18 12:48:52,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 12:48:52,197 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 106 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:52,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 255 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2022-01-18 12:48:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3472. [2022-01-18 12:48:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 3.5859982713915297) internal successors, (12447), 3471 states have internal predecessors, (12447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 12447 transitions. [2022-01-18 12:48:52,306 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 12447 transitions. Word has length 73 [2022-01-18 12:48:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:52,306 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 12447 transitions. [2022-01-18 12:48:52,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 12447 transitions. [2022-01-18 12:48:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:52,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:52,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:52,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 12:48:52,316 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1106737046, now seen corresponding path program 2 times [2022-01-18 12:48:52,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:52,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885953296] [2022-01-18 12:48:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:52,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:52,415 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 12:48:52,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885953296] [2022-01-18 12:48:52,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885953296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:52,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:52,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:52,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587859695] [2022-01-18 12:48:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:52,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:52,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:52,417 INFO L87 Difference]: Start difference. First operand 3472 states and 12447 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:52,567 INFO L93 Difference]: Finished difference Result 5829 states and 20529 transitions. [2022-01-18 12:48:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:48:52,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:52,592 INFO L225 Difference]: With dead ends: 5829 [2022-01-18 12:48:52,593 INFO L226 Difference]: Without dead ends: 5829 [2022-01-18 12:48:52,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:48:52,593 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 111 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:52,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 372 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2022-01-18 12:48:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 3608. [2022-01-18 12:48:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.6168561131133905) internal successors, (13046), 3607 states have internal predecessors, (13046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 13046 transitions. [2022-01-18 12:48:52,759 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 13046 transitions. Word has length 73 [2022-01-18 12:48:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 3608 states and 13046 transitions. [2022-01-18 12:48:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 13046 transitions. [2022-01-18 12:48:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:52,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:52,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:52,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 12:48:52,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1878273170, now seen corresponding path program 3 times [2022-01-18 12:48:52,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157820486] [2022-01-18 12:48:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:52,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:52,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:52,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157820486] [2022-01-18 12:48:52,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157820486] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:52,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107224070] [2022-01-18 12:48:52,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:48:52,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:52,898 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 12:48:52,928 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 12:48:52,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:48:52,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:52,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:48:52,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:53,279 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 12:48:53,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 12:48:53,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107224070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:53,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 12:48:53,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-01-18 12:48:53,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489686750] [2022-01-18 12:48:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:53,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:53,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:53,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:48:53,282 INFO L87 Difference]: Start difference. First operand 3608 states and 13046 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:53,527 INFO L93 Difference]: Finished difference Result 5567 states and 19349 transitions. [2022-01-18 12:48:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 12:48:53,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:53,548 INFO L225 Difference]: With dead ends: 5567 [2022-01-18 12:48:53,548 INFO L226 Difference]: Without dead ends: 5438 [2022-01-18 12:48:53,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:48:53,549 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 172 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:53,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 406 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2022-01-18 12:48:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 3821. [2022-01-18 12:48:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3820 states have (on average 3.592931937172775) internal successors, (13725), 3820 states have internal predecessors, (13725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 13725 transitions. [2022-01-18 12:48:53,679 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 13725 transitions. Word has length 73 [2022-01-18 12:48:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 3821 states and 13725 transitions. [2022-01-18 12:48:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 13725 transitions. [2022-01-18 12:48:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:53,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:53,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:53,714 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 12:48:53,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:53,911 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash -674665910, now seen corresponding path program 4 times [2022-01-18 12:48:53,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:53,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881400325] [2022-01-18 12:48:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:54,026 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 12:48:54,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:54,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881400325] [2022-01-18 12:48:54,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881400325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:54,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:54,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:54,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148014204] [2022-01-18 12:48:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:54,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:54,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:54,028 INFO L87 Difference]: Start difference. First operand 3821 states and 13725 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:54,145 INFO L93 Difference]: Finished difference Result 6186 states and 21379 transitions. [2022-01-18 12:48:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:48:54,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:54,165 INFO L225 Difference]: With dead ends: 6186 [2022-01-18 12:48:54,165 INFO L226 Difference]: Without dead ends: 6084 [2022-01-18 12:48:54,165 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 12:48:54,166 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 122 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:54,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 320 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2022-01-18 12:48:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 3740. [2022-01-18 12:48:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 3739 states have (on average 3.6014977266648835) internal successors, (13466), 3739 states have internal predecessors, (13466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 13466 transitions. [2022-01-18 12:48:54,298 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 13466 transitions. Word has length 73 [2022-01-18 12:48:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:54,298 INFO L470 AbstractCegarLoop]: Abstraction has 3740 states and 13466 transitions. [2022-01-18 12:48:54,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 13466 transitions. [2022-01-18 12:48:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:54,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:54,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:54,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 12:48:54,309 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash 500583314, now seen corresponding path program 3 times [2022-01-18 12:48:54,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:54,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147308175] [2022-01-18 12:48:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:54,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:54,441 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 12:48:54,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147308175] [2022-01-18 12:48:54,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147308175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:54,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:54,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:48:54,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611168151] [2022-01-18 12:48:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:54,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:54,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:48:54,445 INFO L87 Difference]: Start difference. First operand 3740 states and 13466 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:54,628 INFO L93 Difference]: Finished difference Result 5057 states and 17231 transitions. [2022-01-18 12:48:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 12:48:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:54,643 INFO L225 Difference]: With dead ends: 5057 [2022-01-18 12:48:54,643 INFO L226 Difference]: Without dead ends: 4823 [2022-01-18 12:48:54,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:48:54,644 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 112 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:54,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 381 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2022-01-18 12:48:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 3776. [2022-01-18 12:48:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3775 states have (on average 3.583046357615894) internal successors, (13526), 3775 states have internal predecessors, (13526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 13526 transitions. [2022-01-18 12:48:54,790 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 13526 transitions. Word has length 73 [2022-01-18 12:48:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:54,790 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 13526 transitions. [2022-01-18 12:48:54,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 13526 transitions. [2022-01-18 12:48:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:54,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:54,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:54,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 12:48:54,800 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1096125968, now seen corresponding path program 5 times [2022-01-18 12:48:54,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:54,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605813584] [2022-01-18 12:48:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:54,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:54,877 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 12:48:54,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605813584] [2022-01-18 12:48:54,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605813584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:54,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:48:54,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:48:54,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630946183] [2022-01-18 12:48:54,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:54,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:48:54,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:48:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:48:54,879 INFO L87 Difference]: Start difference. First operand 3776 states and 13526 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:55,022 INFO L93 Difference]: Finished difference Result 5442 states and 19451 transitions. [2022-01-18 12:48:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:48:55,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:55,039 INFO L225 Difference]: With dead ends: 5442 [2022-01-18 12:48:55,039 INFO L226 Difference]: Without dead ends: 5442 [2022-01-18 12:48:55,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:48:55,040 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 95 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:55,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 353 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2022-01-18 12:48:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 4050. [2022-01-18 12:48:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4049 states have (on average 3.5961965917510494) internal successors, (14561), 4049 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 14561 transitions. [2022-01-18 12:48:55,156 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 14561 transitions. Word has length 73 [2022-01-18 12:48:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:55,157 INFO L470 AbstractCegarLoop]: Abstraction has 4050 states and 14561 transitions. [2022-01-18 12:48:55,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 14561 transitions. [2022-01-18 12:48:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-18 12:48:55,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:55,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:55,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 12:48:55,168 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1867662092, now seen corresponding path program 6 times [2022-01-18 12:48:55,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:55,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207885234] [2022-01-18 12:48:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:55,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:55,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:55,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207885234] [2022-01-18 12:48:55,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207885234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:55,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192535895] [2022-01-18 12:48:55,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:48:55,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:55,291 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 12:48:55,298 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 12:48:55,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:48:55,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:55,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:48:55,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:55,618 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 12:48:55,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 12:48:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192535895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:48:55,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 12:48:55,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-01-18 12:48:55,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140991601] [2022-01-18 12:48:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:48:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:48:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:48:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:48:55,620 INFO L87 Difference]: Start difference. First operand 4050 states and 14561 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:55,779 INFO L93 Difference]: Finished difference Result 4484 states and 16074 transitions. [2022-01-18 12:48:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:48:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-18 12:48:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:55,791 INFO L225 Difference]: With dead ends: 4484 [2022-01-18 12:48:55,791 INFO L226 Difference]: Without dead ends: 4418 [2022-01-18 12:48:55,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:48:55,792 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 64 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:55,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 351 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:48:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2022-01-18 12:48:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 3828. [2022-01-18 12:48:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 3.627906976744186) internal successors, (13884), 3827 states have internal predecessors, (13884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 13884 transitions. [2022-01-18 12:48:55,896 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 13884 transitions. Word has length 73 [2022-01-18 12:48:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:55,896 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 13884 transitions. [2022-01-18 12:48:55,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 13884 transitions. [2022-01-18 12:48:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:48:55,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:55,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:55,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 12:48:56,123 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,SelfDestructingSolverStorable14 [2022-01-18 12:48:56,124 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1245844032, now seen corresponding path program 1 times [2022-01-18 12:48:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133844947] [2022-01-18 12:48:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:56,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:56,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133844947] [2022-01-18 12:48:56,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133844947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833372589] [2022-01-18 12:48:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:56,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:56,282 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 12:48:56,311 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 12:48:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:56,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:48:56,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:56,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:48:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:58,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833372589] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:48:58,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:48:58,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-01-18 12:48:58,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231652153] [2022-01-18 12:48:58,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:48:58,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:48:58,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:48:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:48:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:48:58,244 INFO L87 Difference]: Start difference. First operand 3828 states and 13884 transitions. Second operand has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:48:58,598 INFO L93 Difference]: Finished difference Result 7271 states and 25977 transitions. [2022-01-18 12:48:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 12:48:58,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 0 states have call successors, (0), 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 75 [2022-01-18 12:48:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:48:58,619 INFO L225 Difference]: With dead ends: 7271 [2022-01-18 12:48:58,619 INFO L226 Difference]: Without dead ends: 7031 [2022-01-18 12:48:58,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:48:58,620 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 233 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:48:58,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1251 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-01-18 12:48:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7031 states. [2022-01-18 12:48:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7031 to 4463. [2022-01-18 12:48:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4462 states have (on average 3.6151949798296728) internal successors, (16131), 4462 states have internal predecessors, (16131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 16131 transitions. [2022-01-18 12:48:58,758 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 16131 transitions. Word has length 75 [2022-01-18 12:48:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:48:58,758 INFO L470 AbstractCegarLoop]: Abstraction has 4463 states and 16131 transitions. [2022-01-18 12:48:58,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:48:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 16131 transitions. [2022-01-18 12:48:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:48:58,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:48:58,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:48:58,792 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 12:48:58,990 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,SelfDestructingSolverStorable15 [2022-01-18 12:48:58,990 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:48:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:48:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash 479394602, now seen corresponding path program 2 times [2022-01-18 12:48:58,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:48:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740966383] [2022-01-18 12:48:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:48:58,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:48:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:48:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:59,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:48:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740966383] [2022-01-18 12:48:59,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740966383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:48:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156381632] [2022-01-18 12:48:59,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:48:59,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:48:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:48:59,156 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 12:48:59,185 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 12:48:59,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:48:59,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:48:59,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:48:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:48:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:48:59,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:00,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156381632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:00,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:00,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-01-18 12:49:00,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328291199] [2022-01-18 12:49:00,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:00,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:49:00,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:49:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:49:00,466 INFO L87 Difference]: Start difference. First operand 4463 states and 16131 transitions. Second operand has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:00,680 INFO L93 Difference]: Finished difference Result 6285 states and 22849 transitions. [2022-01-18 12:49:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:49:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 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 75 [2022-01-18 12:49:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:00,696 INFO L225 Difference]: With dead ends: 6285 [2022-01-18 12:49:00,696 INFO L226 Difference]: Without dead ends: 6045 [2022-01-18 12:49:00,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:49:00,697 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 185 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:00,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 806 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-01-18 12:49:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2022-01-18 12:49:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 4763. [2022-01-18 12:49:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4762 states have (on average 3.623687526249475) internal successors, (17256), 4762 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 17256 transitions. [2022-01-18 12:49:00,833 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 17256 transitions. Word has length 75 [2022-01-18 12:49:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:00,833 INFO L470 AbstractCegarLoop]: Abstraction has 4763 states and 17256 transitions. [2022-01-18 12:49:00,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 17256 transitions. [2022-01-18 12:49:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:49:00,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:00,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:00,870 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 12:49:01,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 12:49:01,060 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash -180126954, now seen corresponding path program 3 times [2022-01-18 12:49:01,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:01,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987129682] [2022-01-18 12:49:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:01,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:01,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987129682] [2022-01-18 12:49:01,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987129682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5680420] [2022-01-18 12:49:01,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:49:01,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:01,236 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 12:49:01,237 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 12:49:01,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:49:01,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 12:49:01,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:01,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:06,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5680420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:06,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:06,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-01-18 12:49:06,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925126572] [2022-01-18 12:49:06,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:06,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:49:06,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:49:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:49:06,288 INFO L87 Difference]: Start difference. First operand 4763 states and 17256 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:06,916 INFO L93 Difference]: Finished difference Result 9672 states and 34766 transitions. [2022-01-18 12:49:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:49:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 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 75 [2022-01-18 12:49:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:06,947 INFO L225 Difference]: With dead ends: 9672 [2022-01-18 12:49:06,948 INFO L226 Difference]: Without dead ends: 9432 [2022-01-18 12:49:06,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:49:06,949 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 421 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:06,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1586 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 56 Unchecked, 0.3s Time] [2022-01-18 12:49:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2022-01-18 12:49:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 4763. [2022-01-18 12:49:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4762 states have (on average 3.623687526249475) internal successors, (17256), 4762 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 17256 transitions. [2022-01-18 12:49:07,128 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 17256 transitions. Word has length 75 [2022-01-18 12:49:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:07,128 INFO L470 AbstractCegarLoop]: Abstraction has 4763 states and 17256 transitions. [2022-01-18 12:49:07,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 17256 transitions. [2022-01-18 12:49:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:49:07,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:07,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:07,170 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 12:49:07,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:07,366 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash -366423954, now seen corresponding path program 1 times [2022-01-18 12:49:07,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:07,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178953470] [2022-01-18 12:49:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:07,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:07,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:07,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178953470] [2022-01-18 12:49:07,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178953470] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:07,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971882286] [2022-01-18 12:49:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:07,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:07,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:07,505 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 12:49:07,538 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 12:49:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:07,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:49:07,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:07,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:08,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971882286] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:08,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:08,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 21 [2022-01-18 12:49:08,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104466959] [2022-01-18 12:49:08,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:08,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:49:08,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:49:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:49:08,467 INFO L87 Difference]: Start difference. First operand 4763 states and 17256 transitions. Second operand has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:11,314 INFO L93 Difference]: Finished difference Result 13122 states and 46587 transitions. [2022-01-18 12:49:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 12:49:11,315 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 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 75 [2022-01-18 12:49:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:11,352 INFO L225 Difference]: With dead ends: 13122 [2022-01-18 12:49:11,353 INFO L226 Difference]: Without dead ends: 13122 [2022-01-18 12:49:11,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1117, Invalid=2915, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:49:11,354 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 844 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:11,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 2247 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:49:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2022-01-18 12:49:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 5820. [2022-01-18 12:49:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 5819 states have (on average 3.6074926963395773) internal successors, (20992), 5819 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 20992 transitions. [2022-01-18 12:49:11,565 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 20992 transitions. Word has length 75 [2022-01-18 12:49:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:11,565 INFO L470 AbstractCegarLoop]: Abstraction has 5820 states and 20992 transitions. [2022-01-18 12:49:11,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 20992 transitions. [2022-01-18 12:49:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:49:11,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:11,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:11,606 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 12:49:11,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:11,800 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1735385766, now seen corresponding path program 2 times [2022-01-18 12:49:11,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:11,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899638213] [2022-01-18 12:49:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:11,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:11,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:11,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899638213] [2022-01-18 12:49:11,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899638213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:11,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956180630] [2022-01-18 12:49:11,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:49:11,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:12,000 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 12:49:12,052 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 12:49:12,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:49:12,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:12,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:49:12,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:12,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:13,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956180630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:13,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:13,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 21 [2022-01-18 12:49:13,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507535872] [2022-01-18 12:49:13,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:13,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:49:13,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:49:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:49:13,197 INFO L87 Difference]: Start difference. First operand 5820 states and 20992 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 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 12:49:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:19,554 INFO L93 Difference]: Finished difference Result 38406 states and 137935 transitions. [2022-01-18 12:49:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 12:49:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 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 75 [2022-01-18 12:49:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:19,676 INFO L225 Difference]: With dead ends: 38406 [2022-01-18 12:49:19,676 INFO L226 Difference]: Without dead ends: 38406 [2022-01-18 12:49:19,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2523, Invalid=8607, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 12:49:19,679 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 2025 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:19,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 3171 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 12:49:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38406 states. [2022-01-18 12:49:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38406 to 7385. [2022-01-18 12:49:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7385 states, 7384 states have (on average 3.771668472372698) internal successors, (27850), 7384 states have internal predecessors, (27850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 27850 transitions. [2022-01-18 12:49:20,355 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 27850 transitions. Word has length 75 [2022-01-18 12:49:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:20,358 INFO L470 AbstractCegarLoop]: Abstraction has 7385 states and 27850 transitions. [2022-01-18 12:49:20,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 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 12:49:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 27850 transitions. [2022-01-18 12:49:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:49:20,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:20,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:20,454 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 12:49:20,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:20,652 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1423219130, now seen corresponding path program 3 times [2022-01-18 12:49:20,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:20,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098366719] [2022-01-18 12:49:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:20,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:20,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098366719] [2022-01-18 12:49:20,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098366719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098035130] [2022-01-18 12:49:20,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:49:20,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:20,797 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 12:49:20,798 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 12:49:20,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:49:20,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:49:20,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:21,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:21,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098035130] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:21,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:21,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 17 [2022-01-18 12:49:21,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147836703] [2022-01-18 12:49:21,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:49:21,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:49:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:49:21,641 INFO L87 Difference]: Start difference. First operand 7385 states and 27850 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 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 12:49:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:25,062 INFO L93 Difference]: Finished difference Result 25370 states and 92132 transitions. [2022-01-18 12:49:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 12:49:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 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 75 [2022-01-18 12:49:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:25,131 INFO L225 Difference]: With dead ends: 25370 [2022-01-18 12:49:25,132 INFO L226 Difference]: Without dead ends: 25181 [2022-01-18 12:49:25,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1233, Invalid=4317, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 12:49:25,134 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1119 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:25,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2097 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:49:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25181 states. [2022-01-18 12:49:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25181 to 8577. [2022-01-18 12:49:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 8576 states have (on average 3.7747201492537314) internal successors, (32372), 8576 states have internal predecessors, (32372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 32372 transitions. [2022-01-18 12:49:25,575 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 32372 transitions. Word has length 75 [2022-01-18 12:49:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:25,575 INFO L470 AbstractCegarLoop]: Abstraction has 8577 states and 32372 transitions. [2022-01-18 12:49:25,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 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 12:49:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 32372 transitions. [2022-01-18 12:49:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:49:25,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:25,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:25,608 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 12:49:25,794 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,SelfDestructingSolverStorable20 [2022-01-18 12:49:25,794 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2112510834, now seen corresponding path program 4 times [2022-01-18 12:49:25,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:25,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636379741] [2022-01-18 12:49:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:25,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:25,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:25,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636379741] [2022-01-18 12:49:25,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636379741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:25,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481174160] [2022-01-18 12:49:25,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:49:25,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:25,926 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 12:49:25,950 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 12:49:26,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:49:26,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:26,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 12:49:26,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:26,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:26,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481174160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:26,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:26,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 21 [2022-01-18 12:49:26,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095559656] [2022-01-18 12:49:26,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:26,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:49:26,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:49:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:49:26,730 INFO L87 Difference]: Start difference. First operand 8577 states and 32372 transitions. Second operand has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 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 12:49:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:32,930 INFO L93 Difference]: Finished difference Result 51303 states and 188068 transitions. [2022-01-18 12:49:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 12:49:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 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 75 [2022-01-18 12:49:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:33,117 INFO L225 Difference]: With dead ends: 51303 [2022-01-18 12:49:33,117 INFO L226 Difference]: Without dead ends: 51303 [2022-01-18 12:49:33,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6374 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3131, Invalid=11875, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 12:49:33,120 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 1809 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:33,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 3801 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 12:49:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51303 states. [2022-01-18 12:49:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51303 to 11838. [2022-01-18 12:49:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11838 states, 11837 states have (on average 3.939596181464898) internal successors, (46633), 11837 states have internal predecessors, (46633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 46633 transitions. [2022-01-18 12:49:34,110 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 46633 transitions. Word has length 75 [2022-01-18 12:49:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:34,110 INFO L470 AbstractCegarLoop]: Abstraction has 11838 states and 46633 transitions. [2022-01-18 12:49:34,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.571428571428571) internal successors, (117), 21 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 12:49:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 46633 transitions. [2022-01-18 12:49:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:34,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:34,133 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:34,149 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 12:49:34,334 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,SelfDestructingSolverStorable21 [2022-01-18 12:49:34,334 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1165779906, now seen corresponding path program 4 times [2022-01-18 12:49:34,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:34,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687894992] [2022-01-18 12:49:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:34,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:34,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:34,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687894992] [2022-01-18 12:49:34,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687894992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:34,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292441563] [2022-01-18 12:49:34,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:49:34,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:34,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:34,556 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 12:49:34,585 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 12:49:34,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:49:34,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:49:34,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:34,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:35,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292441563] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:35,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:35,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 18 [2022-01-18 12:49:35,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490882491] [2022-01-18 12:49:35,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:35,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:49:35,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:49:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:49:35,380 INFO L87 Difference]: Start difference. First operand 11838 states and 46633 transitions. Second operand has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 18 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:36,781 INFO L93 Difference]: Finished difference Result 26139 states and 98199 transitions. [2022-01-18 12:49:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 12:49:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 18 states have internal predecessors, (123), 0 states have call successors, (0), 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 12:49:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:36,865 INFO L225 Difference]: With dead ends: 26139 [2022-01-18 12:49:36,866 INFO L226 Difference]: Without dead ends: 24633 [2022-01-18 12:49:36,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:49:36,866 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1160 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:36,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 1469 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:49:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24633 states. [2022-01-18 12:49:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24633 to 14880. [2022-01-18 12:49:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14880 states, 14879 states have (on average 3.912964580953021) internal successors, (58221), 14879 states have internal predecessors, (58221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14880 states to 14880 states and 58221 transitions. [2022-01-18 12:49:37,381 INFO L78 Accepts]: Start accepts. Automaton has 14880 states and 58221 transitions. Word has length 77 [2022-01-18 12:49:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:37,381 INFO L470 AbstractCegarLoop]: Abstraction has 14880 states and 58221 transitions. [2022-01-18 12:49:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 18 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 14880 states and 58221 transitions. [2022-01-18 12:49:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:37,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:37,416 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:37,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 12:49:37,623 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,SelfDestructingSolverStorable22 [2022-01-18 12:49:37,624 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1624372586, now seen corresponding path program 5 times [2022-01-18 12:49:37,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:37,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888376264] [2022-01-18 12:49:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:37,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:37,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888376264] [2022-01-18 12:49:37,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888376264] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587102520] [2022-01-18 12:49:37,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:49:37,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:37,820 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 12:49:37,822 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 12:49:37,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:49:37,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:37,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:49:37,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:38,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:38,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587102520] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:38,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:38,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2022-01-18 12:49:38,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477949207] [2022-01-18 12:49:38,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:38,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:49:38,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:49:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:49:38,925 INFO L87 Difference]: Start difference. First operand 14880 states and 58221 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:42,387 INFO L93 Difference]: Finished difference Result 50551 states and 187490 transitions. [2022-01-18 12:49:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:49:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 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 12:49:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:42,572 INFO L225 Difference]: With dead ends: 50551 [2022-01-18 12:49:42,572 INFO L226 Difference]: Without dead ends: 50503 [2022-01-18 12:49:42,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=972, Invalid=3188, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:49:42,574 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1816 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:42,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1816 Valid, 2587 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:49:42,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50503 states. [2022-01-18 12:49:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50503 to 15554. [2022-01-18 12:49:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 15553 states have (on average 3.938597055230502) internal successors, (61257), 15553 states have internal predecessors, (61257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 61257 transitions. [2022-01-18 12:49:43,489 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 61257 transitions. Word has length 77 [2022-01-18 12:49:43,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:43,489 INFO L470 AbstractCegarLoop]: Abstraction has 15554 states and 61257 transitions. [2022-01-18 12:49:43,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 61257 transitions. [2022-01-18 12:49:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:43,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:43,536 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:43,561 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 12:49:43,751 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,SelfDestructingSolverStorable23 [2022-01-18 12:49:43,751 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1885844624, now seen corresponding path program 6 times [2022-01-18 12:49:43,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799920908] [2022-01-18 12:49:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:43,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:43,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:43,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799920908] [2022-01-18 12:49:43,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799920908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:43,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333790781] [2022-01-18 12:49:43,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:49:43,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:43,908 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 12:49:43,931 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 12:49:43,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:49:43,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:43,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 12:49:43,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:44,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:44,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333790781] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:44,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:44,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-01-18 12:49:44,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018747263] [2022-01-18 12:49:44,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:44,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:49:44,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:44,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:49:44,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:49:44,716 INFO L87 Difference]: Start difference. First operand 15554 states and 61257 transitions. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:47,754 INFO L93 Difference]: Finished difference Result 31482 states and 120049 transitions. [2022-01-18 12:49:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:49:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 0 states have call successors, (0), 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 12:49:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:47,981 INFO L225 Difference]: With dead ends: 31482 [2022-01-18 12:49:47,981 INFO L226 Difference]: Without dead ends: 30279 [2022-01-18 12:49:47,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1109, Invalid=4743, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:49:47,983 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 959 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:47,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2375 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:49:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30279 states. [2022-01-18 12:49:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30279 to 18872. [2022-01-18 12:49:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18872 states, 18871 states have (on average 3.9491282920883894) internal successors, (74524), 18871 states have internal predecessors, (74524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18872 states to 18872 states and 74524 transitions. [2022-01-18 12:49:48,578 INFO L78 Accepts]: Start accepts. Automaton has 18872 states and 74524 transitions. Word has length 77 [2022-01-18 12:49:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:48,578 INFO L470 AbstractCegarLoop]: Abstraction has 18872 states and 74524 transitions. [2022-01-18 12:49:48,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 18872 states and 74524 transitions. [2022-01-18 12:49:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:48,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:48,621 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:48,637 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 12:49:48,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:48,822 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1077134472, now seen corresponding path program 7 times [2022-01-18 12:49:48,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681781386] [2022-01-18 12:49:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:48,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:49,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:49,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681781386] [2022-01-18 12:49:49,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681781386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:49,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597958202] [2022-01-18 12:49:49,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:49:49,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:49,030 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 12:49:49,032 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 12:49:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:49,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:49:49,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:49,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:50,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597958202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:50,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:50,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 22 [2022-01-18 12:49:50,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516693358] [2022-01-18 12:49:50,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:50,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:49:50,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:49:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:49:50,009 INFO L87 Difference]: Start difference. First operand 18872 states and 74524 transitions. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:52,637 INFO L93 Difference]: Finished difference Result 28610 states and 108956 transitions. [2022-01-18 12:49:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 12:49:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 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 12:49:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:52,737 INFO L225 Difference]: With dead ends: 28610 [2022-01-18 12:49:52,737 INFO L226 Difference]: Without dead ends: 28211 [2022-01-18 12:49:52,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=829, Invalid=3461, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:49:52,739 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 921 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:52,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 2596 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:49:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28211 states. [2022-01-18 12:49:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28211 to 16758. [2022-01-18 12:49:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16758 states, 16757 states have (on average 3.925762367965626) internal successors, (65784), 16757 states have internal predecessors, (65784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16758 states to 16758 states and 65784 transitions. [2022-01-18 12:49:53,297 INFO L78 Accepts]: Start accepts. Automaton has 16758 states and 65784 transitions. Word has length 77 [2022-01-18 12:49:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:53,297 INFO L470 AbstractCegarLoop]: Abstraction has 16758 states and 65784 transitions. [2022-01-18 12:49:53,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16758 states and 65784 transitions. [2022-01-18 12:49:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:53,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:53,332 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:53,348 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 12:49:53,535 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,SelfDestructingSolverStorable25 [2022-01-18 12:49:53,535 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1549761106, now seen corresponding path program 8 times [2022-01-18 12:49:53,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:53,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56370723] [2022-01-18 12:49:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:53,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:53,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56370723] [2022-01-18 12:49:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56370723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:53,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502941554] [2022-01-18 12:49:53,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:49:53,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:53,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:53,753 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 12:49:53,753 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 12:49:53,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:49:53,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:53,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:49:53,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:54,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:49:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:54,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502941554] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:49:54,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:49:54,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 21 [2022-01-18 12:49:54,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115150503] [2022-01-18 12:49:54,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:49:54,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 12:49:54,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:49:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 12:49:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:49:54,600 INFO L87 Difference]: Start difference. First operand 16758 states and 65784 transitions. Second operand has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:57,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:49:57,327 INFO L93 Difference]: Finished difference Result 33778 states and 127726 transitions. [2022-01-18 12:49:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:49:57,327 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 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 12:49:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:49:57,441 INFO L225 Difference]: With dead ends: 33778 [2022-01-18 12:49:57,441 INFO L226 Difference]: Without dead ends: 33778 [2022-01-18 12:49:57,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1062, Invalid=4488, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 12:49:57,443 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 814 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:49:57,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 3261 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 12:49:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33778 states. [2022-01-18 12:49:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33778 to 16508. [2022-01-18 12:49:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16508 states, 16507 states have (on average 3.90488883503968) internal successors, (64458), 16507 states have internal predecessors, (64458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16508 states to 16508 states and 64458 transitions. [2022-01-18 12:49:58,163 INFO L78 Accepts]: Start accepts. Automaton has 16508 states and 64458 transitions. Word has length 77 [2022-01-18 12:49:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:49:58,163 INFO L470 AbstractCegarLoop]: Abstraction has 16508 states and 64458 transitions. [2022-01-18 12:49:58,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:49:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 16508 states and 64458 transitions. [2022-01-18 12:49:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:49:58,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:49:58,202 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:49:58,217 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 12:49:58,402 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,SelfDestructingSolverStorable26 [2022-01-18 12:49:58,403 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:49:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:49:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2143325036, now seen corresponding path program 5 times [2022-01-18 12:49:58,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:49:58,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280846639] [2022-01-18 12:49:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:49:58,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:49:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:49:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:58,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:49:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280846639] [2022-01-18 12:49:58,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280846639] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:49:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306464247] [2022-01-18 12:49:58,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:49:58,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:49:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:49:58,604 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 12:49:58,605 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 12:49:58,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:49:58,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:49:58,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 12:49:58,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:49:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:49:59,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:06,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306464247] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:06,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:06,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 28 [2022-01-18 12:50:06,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814144259] [2022-01-18 12:50:06,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:06,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 12:50:06,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 12:50:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-01-18 12:50:06,244 INFO L87 Difference]: Start difference. First operand 16508 states and 64458 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:07,236 INFO L93 Difference]: Finished difference Result 21754 states and 83682 transitions. [2022-01-18 12:50:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 12:50:07,236 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 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 12:50:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:07,418 INFO L225 Difference]: With dead ends: 21754 [2022-01-18 12:50:07,418 INFO L226 Difference]: Without dead ends: 21514 [2022-01-18 12:50:07,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 12:50:07,419 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 436 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:07,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2497 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 802 Invalid, 0 Unknown, 180 Unchecked, 0.5s Time] [2022-01-18 12:50:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21514 states. [2022-01-18 12:50:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21514 to 17043. [2022-01-18 12:50:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 17042 states have (on average 3.9049994132144112) internal successors, (66549), 17042 states have internal predecessors, (66549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 66549 transitions. [2022-01-18 12:50:07,806 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 66549 transitions. Word has length 77 [2022-01-18 12:50:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:07,806 INFO L470 AbstractCegarLoop]: Abstraction has 17043 states and 66549 transitions. [2022-01-18 12:50:07,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 66549 transitions. [2022-01-18 12:50:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:50:07,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:07,842 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:50:07,858 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 12:50:08,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 12:50:08,044 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:50:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash 275989438, now seen corresponding path program 6 times [2022-01-18 12:50:08,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:08,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103607160] [2022-01-18 12:50:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:08,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:08,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103607160] [2022-01-18 12:50:08,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103607160] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328502274] [2022-01-18 12:50:08,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:50:08,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:08,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:08,252 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 12:50:08,278 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 12:50:08,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:50:08,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:50:08,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:50:08,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:08,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:16,199 WARN L838 $PredicateComparison]: unable to prove that (or (and (< 1 (mod c_~N~0 4294967296)) (or (< (div (+ 1 (* (- 1) c_~N~0)) (- 4294967296)) (+ (div (+ c_~N~0 (- 4)) 4294967296) 2)) (and (forall ((~M~0 Int)) (let ((.cse0 (* 2 ~M~0))) (<= (div (+ (mod (+ c_~q~0 .cse0) 4294967296) (* (- 2) ~M~0) (* (- 1) c_~p~0)) (- 4294967296)) (+ 1 (div (+ .cse0 (- 4294967296) c_~p~0) 4294967296))))) (forall ((~M~0 Int)) (let ((.cse1 (* (- 2) ~M~0)) (.cse2 (* (- 1) c_~p~0))) (<= (div (+ (- 1) .cse1 .cse2) (- 4294967296)) (div (+ (- 1) (mod (+ c_~q~0 (* 2 ~M~0)) 4294967296) .cse1 .cse2) (- 4294967296)))))))) (= (mod c_thread2Thread1of1ForFork1_~cond~1 256) 0)) is different from false [2022-01-18 12:50:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-18 12:50:17,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328502274] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:17,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:17,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2022-01-18 12:50:17,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527117836] [2022-01-18 12:50:17,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:17,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:50:17,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:50:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=409, Unknown=1, NotChecked=42, Total=552 [2022-01-18 12:50:17,043 INFO L87 Difference]: Start difference. First operand 17043 states and 66549 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:17,442 INFO L93 Difference]: Finished difference Result 22234 states and 86071 transitions. [2022-01-18 12:50:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 12:50:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 12:50:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:17,504 INFO L225 Difference]: With dead ends: 22234 [2022-01-18 12:50:17,504 INFO L226 Difference]: Without dead ends: 21799 [2022-01-18 12:50:17,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=169, Invalid=764, Unknown=1, NotChecked=58, Total=992 [2022-01-18 12:50:17,504 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 341 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:17,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 1341 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 270 Invalid, 0 Unknown, 252 Unchecked, 0.2s Time] [2022-01-18 12:50:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21799 states. [2022-01-18 12:50:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21799 to 17523. [2022-01-18 12:50:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17523 states, 17522 states have (on average 3.9131948407716015) internal successors, (68567), 17522 states have internal predecessors, (68567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17523 states to 17523 states and 68567 transitions. [2022-01-18 12:50:17,991 INFO L78 Accepts]: Start accepts. Automaton has 17523 states and 68567 transitions. Word has length 77 [2022-01-18 12:50:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:17,992 INFO L470 AbstractCegarLoop]: Abstraction has 17523 states and 68567 transitions. [2022-01-18 12:50:17,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17523 states and 68567 transitions. [2022-01-18 12:50:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:50:18,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:18,030 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:50:18,047 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 12:50:18,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 12:50:18,231 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:50:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1614218374, now seen corresponding path program 7 times [2022-01-18 12:50:18,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008776348] [2022-01-18 12:50:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:18,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:18,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008776348] [2022-01-18 12:50:18,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008776348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566517560] [2022-01-18 12:50:18,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:50:18,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:18,407 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 12:50:18,429 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 12:50:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:18,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:50:18,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:19,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:30,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566517560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:30,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 25 [2022-01-18 12:50:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558650378] [2022-01-18 12:50:30,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:30,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:50:30,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:50:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=487, Unknown=2, NotChecked=0, Total=600 [2022-01-18 12:50:30,033 INFO L87 Difference]: Start difference. First operand 17523 states and 68567 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:30,659 INFO L93 Difference]: Finished difference Result 22168 states and 85855 transitions. [2022-01-18 12:50:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 12:50:30,659 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 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 12:50:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:30,734 INFO L225 Difference]: With dead ends: 22168 [2022-01-18 12:50:30,734 INFO L226 Difference]: Without dead ends: 22108 [2022-01-18 12:50:30,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=187, Invalid=867, Unknown=2, NotChecked=0, Total=1056 [2022-01-18 12:50:30,735 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 358 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:30,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 1574 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 172 Unchecked, 0.3s Time] [2022-01-18 12:50:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22108 states. [2022-01-18 12:50:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22108 to 17370. [2022-01-18 12:50:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17370 states, 17369 states have (on average 3.9168633772813632) internal successors, (68032), 17369 states have internal predecessors, (68032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 68032 transitions. [2022-01-18 12:50:31,237 INFO L78 Accepts]: Start accepts. Automaton has 17370 states and 68032 transitions. Word has length 77 [2022-01-18 12:50:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:31,237 INFO L470 AbstractCegarLoop]: Abstraction has 17370 states and 68032 transitions. [2022-01-18 12:50:31,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17370 states and 68032 transitions. [2022-01-18 12:50:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:50:31,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:31,275 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:50:31,291 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 12:50:31,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:31,476 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:50:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 365969112, now seen corresponding path program 8 times [2022-01-18 12:50:31,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:31,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176700415] [2022-01-18 12:50:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:31,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:31,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176700415] [2022-01-18 12:50:31,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176700415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790727656] [2022-01-18 12:50:31,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:50:31,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:31,660 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 12:50:31,687 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 12:50:31,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:50:31,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:50:31,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:50:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:32,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:39,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790727656] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:39,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 23 [2022-01-18 12:50:39,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957531927] [2022-01-18 12:50:39,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:39,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:50:39,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:50:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:50:39,547 INFO L87 Difference]: Start difference. First operand 17370 states and 68032 transitions. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:40,514 INFO L93 Difference]: Finished difference Result 20705 states and 80471 transitions. [2022-01-18 12:50:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:50:40,514 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:50:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:40,575 INFO L225 Difference]: With dead ends: 20705 [2022-01-18 12:50:40,575 INFO L226 Difference]: Without dead ends: 20465 [2022-01-18 12:50:40,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:50:40,576 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 316 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:40,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1692 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 488 Invalid, 0 Unknown, 162 Unchecked, 0.6s Time] [2022-01-18 12:50:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20465 states. [2022-01-18 12:50:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20465 to 17386. [2022-01-18 12:50:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17386 states, 17385 states have (on average 3.916709807305148) internal successors, (68092), 17385 states have internal predecessors, (68092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17386 states to 17386 states and 68092 transitions. [2022-01-18 12:50:41,053 INFO L78 Accepts]: Start accepts. Automaton has 17386 states and 68092 transitions. Word has length 77 [2022-01-18 12:50:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:41,053 INFO L470 AbstractCegarLoop]: Abstraction has 17386 states and 68092 transitions. [2022-01-18 12:50:41,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 17386 states and 68092 transitions. [2022-01-18 12:50:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:50:41,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:41,093 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:50:41,109 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 12:50:41,293 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,SelfDestructingSolverStorable30 [2022-01-18 12:50:41,293 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:50:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash 874283454, now seen corresponding path program 9 times [2022-01-18 12:50:41,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:41,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762613527] [2022-01-18 12:50:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:41,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:41,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762613527] [2022-01-18 12:50:41,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762613527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426090729] [2022-01-18 12:50:41,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:50:41,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:41,512 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 12:50:41,540 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 12:50:41,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:50:41,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:50:41,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 12:50:41,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:42,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:50:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:50,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426090729] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:50:50,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:50:50,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 24 [2022-01-18 12:50:50,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751039728] [2022-01-18 12:50:50,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:50:50,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:50:50,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:50:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:50:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=457, Unknown=1, NotChecked=0, Total=552 [2022-01-18 12:50:50,577 INFO L87 Difference]: Start difference. First operand 17386 states and 68092 transitions. Second operand has 24 states, 24 states have (on average 6.875) internal successors, (165), 24 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:50:57,344 INFO L93 Difference]: Finished difference Result 26307 states and 100466 transitions. [2022-01-18 12:50:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 12:50:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.875) internal successors, (165), 24 states have internal predecessors, (165), 0 states have call successors, (0), 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 12:50:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:50:57,435 INFO L225 Difference]: With dead ends: 26307 [2022-01-18 12:50:57,435 INFO L226 Difference]: Without dead ends: 25827 [2022-01-18 12:50:57,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=246, Invalid=1085, Unknown=1, NotChecked=0, Total=1332 [2022-01-18 12:50:57,436 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 622 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:50:57,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2447 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 682 Invalid, 0 Unknown, 187 Unchecked, 3.7s Time] [2022-01-18 12:50:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25827 states. [2022-01-18 12:50:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25827 to 17563. [2022-01-18 12:50:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17563 states, 17562 states have (on average 3.9214212504270582) internal successors, (68868), 17562 states have internal predecessors, (68868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17563 states to 17563 states and 68868 transitions. [2022-01-18 12:50:58,038 INFO L78 Accepts]: Start accepts. Automaton has 17563 states and 68868 transitions. Word has length 77 [2022-01-18 12:50:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:50:58,038 INFO L470 AbstractCegarLoop]: Abstraction has 17563 states and 68868 transitions. [2022-01-18 12:50:58,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.875) internal successors, (165), 24 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:50:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17563 states and 68868 transitions. [2022-01-18 12:50:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:50:58,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:50:58,073 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:50:58,089 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 12:50:58,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:58,274 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:50:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:50:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 964263128, now seen corresponding path program 10 times [2022-01-18 12:50:58,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:50:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95807304] [2022-01-18 12:50:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:50:58,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:50:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:50:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:58,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:50:58,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95807304] [2022-01-18 12:50:58,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95807304] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:50:58,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498331058] [2022-01-18 12:50:58,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:50:58,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:50:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:50:58,510 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 12:50:58,511 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 12:50:58,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:50:58,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:50:58,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 12:50:58,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:50:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:50:59,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:51:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:12,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498331058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:51:12,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:51:12,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 26 [2022-01-18 12:51:12,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992134117] [2022-01-18 12:51:12,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:51:12,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:51:12,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:51:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:51:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=519, Unknown=2, NotChecked=0, Total=650 [2022-01-18 12:51:12,225 INFO L87 Difference]: Start difference. First operand 17563 states and 68868 transitions. Second operand has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 26 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:51:13,740 INFO L93 Difference]: Finished difference Result 23445 states and 90132 transitions. [2022-01-18 12:51:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 12:51:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 26 states have internal predecessors, (162), 0 states have call successors, (0), 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 12:51:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:51:13,809 INFO L225 Difference]: With dead ends: 23445 [2022-01-18 12:51:13,809 INFO L226 Difference]: Without dead ends: 23205 [2022-01-18 12:51:13,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=230, Invalid=824, Unknown=2, NotChecked=0, Total=1056 [2022-01-18 12:51:13,810 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 419 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:51:13,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 1895 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 425 Invalid, 0 Unknown, 204 Unchecked, 0.9s Time] [2022-01-18 12:51:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23205 states. [2022-01-18 12:51:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23205 to 17563. [2022-01-18 12:51:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17563 states, 17562 states have (on average 3.9214212504270582) internal successors, (68868), 17562 states have internal predecessors, (68868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17563 states to 17563 states and 68868 transitions. [2022-01-18 12:51:14,254 INFO L78 Accepts]: Start accepts. Automaton has 17563 states and 68868 transitions. Word has length 77 [2022-01-18 12:51:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:51:14,255 INFO L470 AbstractCegarLoop]: Abstraction has 17563 states and 68868 transitions. [2022-01-18 12:51:14,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 26 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17563 states and 68868 transitions. [2022-01-18 12:51:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:51:14,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:51:14,401 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:51:14,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 12:51:14,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:51:14,601 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:51:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:51:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash 427341020, now seen corresponding path program 11 times [2022-01-18 12:51:14,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:51:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409917038] [2022-01-18 12:51:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:51:14,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:51:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:51:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:14,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:51:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409917038] [2022-01-18 12:51:14,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409917038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:51:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887813076] [2022-01-18 12:51:14,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:51:14,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:51:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:51:14,823 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 12:51:14,823 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 12:51:14,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:51:14,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:51:14,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 12:51:14,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:51:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:15,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:51:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:20,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887813076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:51:20,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:51:20,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 22 [2022-01-18 12:51:20,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317337439] [2022-01-18 12:51:20,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:51:20,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:51:20,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:51:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:51:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:51:20,076 INFO L87 Difference]: Start difference. First operand 17563 states and 68868 transitions. Second operand has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:23,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:31,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:33,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:51:37,480 INFO L93 Difference]: Finished difference Result 26448 states and 100875 transitions. [2022-01-18 12:51:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 12:51:37,480 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:51:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:51:37,661 INFO L225 Difference]: With dead ends: 26448 [2022-01-18 12:51:37,661 INFO L226 Difference]: Without dead ends: 26208 [2022-01-18 12:51:37,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=233, Invalid=889, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:51:37,662 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 522 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:51:37,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1920 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 608 Invalid, 3 Unknown, 66 Unchecked, 7.4s Time] [2022-01-18 12:51:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26208 states. [2022-01-18 12:51:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26208 to 17575. [2022-01-18 12:51:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17575 states, 17574 states have (on average 3.9210765904176625) internal successors, (68909), 17574 states have internal predecessors, (68909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17575 states to 17575 states and 68909 transitions. [2022-01-18 12:51:38,055 INFO L78 Accepts]: Start accepts. Automaton has 17575 states and 68909 transitions. Word has length 77 [2022-01-18 12:51:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:51:38,055 INFO L470 AbstractCegarLoop]: Abstraction has 17575 states and 68909 transitions. [2022-01-18 12:51:38,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 17575 states and 68909 transitions. [2022-01-18 12:51:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:51:38,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:51:38,090 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:51:38,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 12:51:38,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:51:38,291 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:51:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:51:38,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1651328370, now seen corresponding path program 12 times [2022-01-18 12:51:38,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:51:38,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244338108] [2022-01-18 12:51:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:51:38,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:51:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:51:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:38,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:51:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244338108] [2022-01-18 12:51:38,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244338108] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:51:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14354548] [2022-01-18 12:51:38,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:51:38,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:51:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:51:38,495 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 12:51:38,498 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 12:51:38,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:51:38,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:51:38,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 12:51:38,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:51:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:51:39,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:51:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:51:39,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14354548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:51:39,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:51:39,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 18 [2022-01-18 12:51:39,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838611801] [2022-01-18 12:51:39,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:51:39,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:51:39,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:51:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:51:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:51:39,842 INFO L87 Difference]: Start difference. First operand 17575 states and 68909 transitions. Second operand has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:51:42,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:46,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:48,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:51:55,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:52:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:52:17,750 INFO L93 Difference]: Finished difference Result 26127 states and 100017 transitions. [2022-01-18 12:52:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 12:52:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:52:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:52:17,831 INFO L225 Difference]: With dead ends: 26127 [2022-01-18 12:52:17,831 INFO L226 Difference]: Without dead ends: 25602 [2022-01-18 12:52:17,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=142, Invalid=611, Unknown=3, NotChecked=0, Total=756 [2022-01-18 12:52:17,831 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 369 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:52:17,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 1784 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-01-18 12:52:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25602 states. [2022-01-18 12:52:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25602 to 18207. [2022-01-18 12:52:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18207 states, 18206 states have (on average 3.92854004174448) internal successors, (71523), 18206 states have internal predecessors, (71523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:52:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18207 states to 18207 states and 71523 transitions. [2022-01-18 12:52:18,307 INFO L78 Accepts]: Start accepts. Automaton has 18207 states and 71523 transitions. Word has length 77 [2022-01-18 12:52:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:52:18,308 INFO L470 AbstractCegarLoop]: Abstraction has 18207 states and 71523 transitions. [2022-01-18 12:52:18,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:52:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18207 states and 71523 transitions. [2022-01-18 12:52:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:52:18,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:52:18,344 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:52:18,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 12:52:18,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:52:18,544 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:52:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:52:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1114406262, now seen corresponding path program 13 times [2022-01-18 12:52:18,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:52:18,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443297940] [2022-01-18 12:52:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:52:18,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:52:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:52:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:52:18,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:52:18,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443297940] [2022-01-18 12:52:18,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443297940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:52:18,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004843266] [2022-01-18 12:52:18,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:52:18,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:52:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:52:18,730 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 12:52:18,731 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 12:52:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:52:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:52:18,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:52:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:52:19,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:52:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:52:27,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004843266] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:52:27,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:52:27,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 24 [2022-01-18 12:52:27,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511672182] [2022-01-18 12:52:27,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:52:27,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:52:27,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:52:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:52:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=446, Unknown=2, NotChecked=0, Total=552 [2022-01-18 12:52:27,504 INFO L87 Difference]: Start difference. First operand 18207 states and 71523 transitions. Second operand has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:52:34,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:52:37,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:52:43,993 WARN L228 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 82 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:52:46,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:52:48,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:53:10,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:53:12,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:53:29,278 WARN L228 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 86 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:53:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:53:29,801 INFO L93 Difference]: Finished difference Result 30512 states and 116169 transitions. [2022-01-18 12:53:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 12:53:29,801 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:53:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:53:29,895 INFO L225 Difference]: With dead ends: 30512 [2022-01-18 12:53:29,895 INFO L226 Difference]: Without dead ends: 30059 [2022-01-18 12:53:29,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=374, Invalid=1782, Unknown=6, NotChecked=0, Total=2162 [2022-01-18 12:53:29,896 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 752 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:53:29,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 2653 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 679 Invalid, 5 Unknown, 162 Unchecked, 14.9s Time] [2022-01-18 12:53:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30059 states. [2022-01-18 12:53:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30059 to 18860. [2022-01-18 12:53:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18860 states, 18859 states have (on average 3.939498382735034) internal successors, (74295), 18859 states have internal predecessors, (74295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:53:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18860 states to 18860 states and 74295 transitions. [2022-01-18 12:53:30,623 INFO L78 Accepts]: Start accepts. Automaton has 18860 states and 74295 transitions. Word has length 77 [2022-01-18 12:53:30,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:53:30,624 INFO L470 AbstractCegarLoop]: Abstraction has 18860 states and 74295 transitions. [2022-01-18 12:53:30,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:53:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 18860 states and 74295 transitions. [2022-01-18 12:53:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:53:30,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:53:30,662 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:53:30,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 12:53:30,863 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,SelfDestructingSolverStorable35 [2022-01-18 12:53:30,863 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:53:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:53:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 622784818, now seen corresponding path program 14 times [2022-01-18 12:53:30,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:53:30,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822158525] [2022-01-18 12:53:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:53:30,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:53:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:53:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:53:31,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:53:31,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822158525] [2022-01-18 12:53:31,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822158525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:53:31,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431113002] [2022-01-18 12:53:31,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:53:31,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:53:31,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:53:31,064 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 12:53:31,083 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 12:53:31,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:53:31,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:53:31,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:53:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:53:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:53:31,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:53:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:53:32,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431113002] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:53:32,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:53:32,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2022-01-18 12:53:32,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903971534] [2022-01-18 12:53:32,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:53:32,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:53:32,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:53:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:53:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:53:32,927 INFO L87 Difference]: Start difference. First operand 18860 states and 74295 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:53:39,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:53:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:53:41,822 INFO L93 Difference]: Finished difference Result 31819 states and 121459 transitions. [2022-01-18 12:53:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 12:53:41,823 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 12:53:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:53:41,924 INFO L225 Difference]: With dead ends: 31819 [2022-01-18 12:53:41,924 INFO L226 Difference]: Without dead ends: 31294 [2022-01-18 12:53:41,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=326, Invalid=1653, Unknown=1, NotChecked=0, Total=1980 [2022-01-18 12:53:41,925 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 712 mSDsluCounter, 3222 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:53:41,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 3173 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1162 Invalid, 1 Unknown, 117 Unchecked, 5.0s Time] [2022-01-18 12:53:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31294 states. [2022-01-18 12:53:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31294 to 19135. [2022-01-18 12:53:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19135 states, 19134 states have (on average 3.9475279606982334) internal successors, (75532), 19134 states have internal predecessors, (75532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:53:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19135 states to 19135 states and 75532 transitions. [2022-01-18 12:53:42,708 INFO L78 Accepts]: Start accepts. Automaton has 19135 states and 75532 transitions. Word has length 77 [2022-01-18 12:53:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:53:42,708 INFO L470 AbstractCegarLoop]: Abstraction has 19135 states and 75532 transitions. [2022-01-18 12:53:42,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:53:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 19135 states and 75532 transitions. [2022-01-18 12:53:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:53:42,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:53:42,746 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:53:42,762 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 12:53:42,947 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,SelfDestructingSolverStorable36 [2022-01-18 12:53:42,947 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:53:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:53:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1511133055, now seen corresponding path program 9 times [2022-01-18 12:53:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:53:42,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298724727] [2022-01-18 12:53:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:53:42,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:53:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:53:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:53:43,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:53:43,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298724727] [2022-01-18 12:53:43,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298724727] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:53:43,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487572891] [2022-01-18 12:53:43,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:53:43,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:53:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:53:43,130 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 12:53:43,132 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 12:53:43,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:53:43,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:53:43,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 12:53:43,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:53:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:53:44,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:54:21,073 WARN L228 SmtUtils]: Spent 33.67s on a formula simplification. DAG size of input: 93 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:54:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:54:21,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487572891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:54:21,911 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:54:21,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 10] total 24 [2022-01-18 12:54:21,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560892568] [2022-01-18 12:54:21,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:54:21,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:54:21,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:54:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:54:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=469, Unknown=1, NotChecked=0, Total=552 [2022-01-18 12:54:21,914 INFO L87 Difference]: Start difference. First operand 19135 states and 75532 transitions. Second operand has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:54:26,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:54:31,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:54:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:54:34,234 INFO L93 Difference]: Finished difference Result 52121 states and 193656 transitions. [2022-01-18 12:54:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:54:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 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 78 [2022-01-18 12:54:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:54:34,437 INFO L225 Difference]: With dead ends: 52121 [2022-01-18 12:54:34,438 INFO L226 Difference]: Without dead ends: 46766 [2022-01-18 12:54:34,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 149 SyntacticMatches, 7 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=1340, Invalid=6849, Unknown=1, NotChecked=0, Total=8190 [2022-01-18 12:54:34,439 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1431 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 90 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:54:34,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 4214 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1963 Invalid, 1 Unknown, 157 Unchecked, 7.6s Time] [2022-01-18 12:54:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46766 states. [2022-01-18 12:54:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46766 to 22377. [2022-01-18 12:54:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22377 states, 22376 states have (on average 4.024132999642474) internal successors, (90044), 22376 states have internal predecessors, (90044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:54:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22377 states to 22377 states and 90044 transitions. [2022-01-18 12:54:35,309 INFO L78 Accepts]: Start accepts. Automaton has 22377 states and 90044 transitions. Word has length 78 [2022-01-18 12:54:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:54:35,310 INFO L470 AbstractCegarLoop]: Abstraction has 22377 states and 90044 transitions. [2022-01-18 12:54:35,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:54:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 22377 states and 90044 transitions. [2022-01-18 12:54:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:54:35,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:54:35,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:54:35,373 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 12:54:35,557 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,SelfDestructingSolverStorable37 [2022-01-18 12:54:35,558 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 12:54:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:54:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1637558499, now seen corresponding path program 1 times [2022-01-18 12:54:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:54:35,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644693436] [2022-01-18 12:54:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:54:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:54:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:54:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:54:35,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:54:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644693436] [2022-01-18 12:54:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644693436] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:54:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388878440] [2022-01-18 12:54:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:54:35,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:54:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:54:35,792 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 12:54:35,793 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 12:54:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:54:35,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 12:54:35,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:54:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:54:36,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:54:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:54:39,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388878440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:54:39,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:54:39,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 25 [2022-01-18 12:54:39,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575234915] [2022-01-18 12:54:39,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:54:39,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:54:39,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:54:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:54:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:54:39,496 INFO L87 Difference]: Start difference. First operand 22377 states and 90044 transitions. Second operand has 25 states, 25 states have (on average 8.2) internal successors, (205), 25 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:54:56,079 WARN L228 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 93 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:54:58,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:55:14,896 WARN L228 SmtUtils]: Spent 16.26s on a formula simplification. DAG size of input: 106 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:55:30,821 WARN L228 SmtUtils]: Spent 15.88s on a formula simplification. DAG size of input: 104 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:55:44,424 WARN L228 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 98 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:56:07,498 WARN L228 SmtUtils]: Spent 23.02s on a formula simplification. DAG size of input: 108 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:56:25,939 WARN L228 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 123 DAG size of output: 114 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:56:44,138 WARN L228 SmtUtils]: Spent 15.61s on a formula simplification. DAG size of input: 113 DAG size of output: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:57:01,276 WARN L228 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 111 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:57:23,431 WARN L228 SmtUtils]: Spent 17.68s on a formula simplification. DAG size of input: 110 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:57:25,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:57:27,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:57:47,305 WARN L228 SmtUtils]: Spent 17.74s on a formula simplification. DAG size of input: 99 DAG size of output: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:57:53,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:57:55,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:57:57,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:57:59,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:01,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:08,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:10,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:12,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:15,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:17,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:23,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:42,433 WARN L228 SmtUtils]: Spent 9.45s on a formula simplification. DAG size of input: 103 DAG size of output: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:58:44,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:58:56,332 WARN L228 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 105 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:59:08,140 WARN L228 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 98 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:59:17,464 WARN L228 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 112 DAG size of output: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:59:19,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:59:20,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:59:37,575 WARN L228 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 109 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:59:46,754 WARN L228 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 122 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:59:49,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:00:12,970 WARN L228 SmtUtils]: Spent 22.89s on a formula simplification. DAG size of input: 105 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:00:15,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:00:33,422 WARN L228 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 95 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:00:34,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:00:36,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:00:38,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:01:01,649 WARN L228 SmtUtils]: Spent 22.58s on a formula simplification. DAG size of input: 107 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:01:03,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:01:31,380 WARN L228 SmtUtils]: Spent 25.21s on a formula simplification. DAG size of input: 100 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:01:55,493 WARN L228 SmtUtils]: Spent 21.86s on a formula simplification. DAG size of input: 114 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:01:57,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:02:00,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:02:29,939 WARN L228 SmtUtils]: Spent 25.23s on a formula simplification. DAG size of input: 100 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 13:02:31,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:02:34,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:02:38,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-01-18 13:02:47,721 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 13:02:47,721 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:02:48,559 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-01-18 13:02:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 13:02:48,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6716 ImplicationChecksByTransitivity, 417.9s TimeCoverageRelationStatistics Valid=2585, Invalid=15226, Unknown=11, NotChecked=0, Total=17822 [2022-01-18 13:02:48,562 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 942 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 125 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 63.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:48,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 3422 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2823 Invalid, 26 Unknown, 305 Unchecked, 63.4s Time] [2022-01-18 13:02:48,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 13:02:48,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 13:02:48,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-01-18 13:02:48,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 13:02:48,767 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (22377states) and FLOYD_HOARE automaton (currently 126 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 8070ms.. [2022-01-18 13:02:48,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 13:02:48,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 13:02:48,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 13:02:48,772 INFO L732 BasicCegarLoop]: Path program histogram: [14, 9, 6, 4, 3, 1, 1, 1] [2022-01-18 13:02:48,773 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:02:48,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:02:48,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:02:48 BasicIcfg [2022-01-18 13:02:48,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:02:48,775 INFO L158 Benchmark]: Toolchain (without parser) took 844007.84ms. Allocated memory was 356.5MB in the beginning and 3.5GB in the end (delta: 3.1GB). Free memory was 303.1MB in the beginning and 1.1GB in the end (delta: -759.5MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2022-01-18 13:02:48,775 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:02:48,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.27ms. Allocated memory was 356.5MB in the beginning and 488.6MB in the end (delta: 132.1MB). Free memory was 302.9MB in the beginning and 462.2MB in the end (delta: -159.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2022-01-18 13:02:48,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.67ms. Allocated memory is still 488.6MB. Free memory was 462.2MB in the beginning and 460.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:02:48,776 INFO L158 Benchmark]: Boogie Preprocessor took 34.98ms. Allocated memory is still 488.6MB. Free memory was 460.1MB in the beginning and 458.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:02:48,776 INFO L158 Benchmark]: RCFGBuilder took 439.34ms. Allocated memory is still 488.6MB. Free memory was 458.0MB in the beginning and 442.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 13:02:48,776 INFO L158 Benchmark]: TraceAbstraction took 843274.41ms. Allocated memory was 488.6MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 441.2MB in the beginning and 1.1GB in the end (delta: -621.3MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2022-01-18 13:02:48,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.27ms. Allocated memory was 356.5MB in the beginning and 488.6MB in the end (delta: 132.1MB). Free memory was 302.9MB in the beginning and 462.2MB in the end (delta: -159.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.67ms. Allocated memory is still 488.6MB. Free memory was 462.2MB in the beginning and 460.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.98ms. Allocated memory is still 488.6MB. Free memory was 460.1MB in the beginning and 458.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 439.34ms. Allocated memory is still 488.6MB. Free memory was 458.0MB in the beginning and 442.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 843274.41ms. Allocated memory was 488.6MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 441.2MB in the beginning and 1.1GB in the end (delta: -621.3MB). Peak memory consumption was 2.4GB. 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: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (22377states) and FLOYD_HOARE automaton (currently 126 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 8070ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22377states) and FLOYD_HOARE automaton (currently 126 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 8070ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22377states) and FLOYD_HOARE automaton (currently 126 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 8070ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22377states) and FLOYD_HOARE automaton (currently 126 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 8070ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 843.1s, OverallIterations: 39, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 1.1s, AutomataDifference: 678.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 38 mSolverCounterUnknown, 21596 SdHoareTripleChecker+Valid, 126.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21596 mSDsluCounter, 61503 SdHoareTripleChecker+Invalid, 122.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2167 IncrementalHoareTripleChecker+Unchecked, 59965 mSDsCounter, 1873 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26367 IncrementalHoareTripleChecker+Invalid, 30445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1873 mSolverCounterUnsat, 7075 mSDtfsCounter, 26367 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5277 GetRequests, 3794 SyntacticMatches, 82 SemanticMatches, 1400 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33121 ImplicationChecksByTransitivity, 641.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22377occurred in iteration=38, InterpolantAutomatonStates: 1107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.9s AutomataMinimizationTime, 38 MinimizatonAttempts, 303531 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 140.0s InterpolantComputationTime, 5048 NumberOfCodeBlocks, 5028 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 6936 ConstructedInterpolants, 325 QuantifiedInterpolants, 86477 SizeOfPredicates, 224 NumberOfNonLiveVariables, 5532 ConjunctsInSsa, 470 ConjunctsInUnsatCore, 93 InterpolantComputations, 13 PerfectInterpolantSequences, 50/313 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