/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-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:02:51,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:02:51,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:02:51,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:02:51,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:02:51,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:02:51,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:02:51,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:02:51,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:02:51,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:02:51,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:02:51,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:02:51,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:02:51,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:02:51,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:02:51,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:02:51,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:02:51,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:02:51,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:02:51,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:02:51,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:02:51,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:02:51,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:02:51,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:02:51,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:02:51,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 13:02:51,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 13:02:51,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 13:02:51,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 13:02:51,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 13:02:51,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 13:02:51,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 13:02:51,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 13:02:51,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:02:51,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:02:51,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:02:51,765 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 13:02:51,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:02:51,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:02:51,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:02:51,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:02:51,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:02:51,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:02:51,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:02:51,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:02:51,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:02:51,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:02:51,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:02:51,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:02:51,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:02:51,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:02:51,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:02:51,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:02:51,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:02:51,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:02:51,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:02:51,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:02:51,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:02:51,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:02:51,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:02:51,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:02:51,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:02:51,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:02:51,805 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:02:51,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:02:51,806 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:02:51,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:02:52,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:02:52,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:02:52,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:02:52,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:02:52,041 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:02:52,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-18 13:02:52,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f974595/cc72e7ed732b42b482e81494ad392e3c/FLAG4a9bd37cc [2022-01-18 13:02:52,468 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:02:52,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-18 13:02:52,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f974595/cc72e7ed732b42b482e81494ad392e3c/FLAG4a9bd37cc [2022-01-18 13:02:52,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f974595/cc72e7ed732b42b482e81494ad392e3c [2022-01-18 13:02:52,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:02:52,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:02:52,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:02:52,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:02:52,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:02:52,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747fe808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52, skipping insertion in model container [2022-01-18 13:02:52,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:02:52,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:02:52,675 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-send-receive-alt.wvr.c[2650,2663] [2022-01-18 13:02:52,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:02:52,687 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:02:52,704 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-send-receive-alt.wvr.c[2650,2663] [2022-01-18 13:02:52,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:02:52,717 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:02:52,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52 WrapperNode [2022-01-18 13:02:52,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:02:52,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:02:52,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:02:52,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:02:52,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,751 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-01-18 13:02:52,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:02:52,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:02:52,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:02:52,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:02:52,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:02:52,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:02:52,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:02:52,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:02:52,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (1/1) ... [2022-01-18 13:02:52,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:02:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:52,816 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 13:02:52,839 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 13:02:52,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:02:52,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 13:02:52,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 13:02:52,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 13:02:52,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 13:02:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 13:02:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:02:52,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:02:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:02:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:02:52,857 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 13:02:52,923 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:02:52,925 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:02:53,148 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:02:53,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:02:53,235 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 13:02:53,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:02:53 BoogieIcfgContainer [2022-01-18 13:02:53,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:02:53,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:02:53,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:02:53,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:02:53,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:02:52" (1/3) ... [2022-01-18 13:02:53,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d014e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:02:53, skipping insertion in model container [2022-01-18 13:02:53,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:02:52" (2/3) ... [2022-01-18 13:02:53,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d014e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:02:53, skipping insertion in model container [2022-01-18 13:02:53,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:02:53" (3/3) ... [2022-01-18 13:02:53,247 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-01-18 13:02:53,252 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:02:53,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:02:53,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:02:53,252 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:02:53,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:02:53,333 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:02:53,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:02:53,383 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 13:02:53,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 13:02:53,393 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-01-18 13:02:53,473 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-18 13:02:53,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:53,500 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:02:53,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-01-18 13:02:53,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792001216] [2022-01-18 13:02:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:53,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:53,738 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 13:02:53,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792001216] [2022-01-18 13:02:53,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792001216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:02:53,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:02:53,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:02:53,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605732189] [2022-01-18 13:02:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:02:53,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:02:53,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:53,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:02:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:02:53,780 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 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 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:53,850 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-01-18 13:02:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:02:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-18 13:02:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:53,879 INFO L225 Difference]: With dead ends: 676 [2022-01-18 13:02:53,879 INFO L226 Difference]: Without dead ends: 642 [2022-01-18 13:02:53,881 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 13:02:53,885 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:53,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:02:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-18 13:02:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-01-18 13:02:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-01-18 13:02:53,979 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-01-18 13:02:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:53,980 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-01-18 13:02:53,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-01-18 13:02:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 13:02:53,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:53,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:02:53,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:02:53,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-01-18 13:02:53,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86138068] [2022-01-18 13:02:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:53,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:54,243 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 13:02:54,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:54,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86138068] [2022-01-18 13:02:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86138068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:02:54,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:02:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 13:02:54,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328442439] [2022-01-18 13:02:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:02:54,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 13:02:54,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 13:02:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 13:02:54,249 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:54,351 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-01-18 13:02:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 13:02:54,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-18 13:02:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:54,357 INFO L225 Difference]: With dead ends: 1217 [2022-01-18 13:02:54,357 INFO L226 Difference]: Without dead ends: 864 [2022-01-18 13:02:54,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 13:02:54,362 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:54,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:02:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-01-18 13:02:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-01-18 13:02:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-01-18 13:02:54,392 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-01-18 13:02:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:54,394 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-01-18 13:02:54,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-01-18 13:02:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-18 13:02:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:54,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:02:54,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:02:54,399 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-01-18 13:02:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866720633] [2022-01-18 13:02:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:54,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:54,541 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 13:02:54,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:54,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866720633] [2022-01-18 13:02:54,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866720633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:02:54,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:02:54,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:02:54,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832854829] [2022-01-18 13:02:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:02:54,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:02:54,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:02:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:02:54,544 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:54,576 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-01-18 13:02:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:02:54,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-18 13:02:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:54,581 INFO L225 Difference]: With dead ends: 843 [2022-01-18 13:02:54,582 INFO L226 Difference]: Without dead ends: 795 [2022-01-18 13:02:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:02:54,595 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:54,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 159 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:02:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-18 13:02:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-01-18 13:02:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-01-18 13:02:54,633 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-01-18 13:02:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:54,635 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-01-18 13:02:54,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-01-18 13:02:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 13:02:54,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:54,642 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, 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 13:02:54,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:02:54,643 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 855435936, now seen corresponding path program 1 times [2022-01-18 13:02:54,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118533662] [2022-01-18 13:02:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:54,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:02:54,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118533662] [2022-01-18 13:02:54,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118533662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:02:54,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:02:54,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 13:02:54,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053722989] [2022-01-18 13:02:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:02:54,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 13:02:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 13:02:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 13:02:54,807 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:54,958 INFO L93 Difference]: Finished difference Result 924 states and 2269 transitions. [2022-01-18 13:02:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:02:54,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-18 13:02:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:54,963 INFO L225 Difference]: With dead ends: 924 [2022-01-18 13:02:54,963 INFO L226 Difference]: Without dead ends: 801 [2022-01-18 13:02:54,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:02:54,969 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 269 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:54,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 484 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:02:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-01-18 13:02:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-01-18 13:02:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-01-18 13:02:54,992 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-01-18 13:02:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:54,993 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-01-18 13:02:54,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-01-18 13:02:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 13:02:54,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:54,996 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, 1, 1, 1, 1, 1, 1, 1, 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 13:02:54,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:02:54,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:02:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash -881340959, now seen corresponding path program 1 times [2022-01-18 13:02:54,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:54,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854167084] [2022-01-18 13:02:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:54,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:02:55,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854167084] [2022-01-18 13:02:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854167084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965800822] [2022-01-18 13:02:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:55,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:55,279 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 13:02:55,306 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 13:02:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:55,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 13:02:55,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:56,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:02:56,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:02:56,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:02:57,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 13:02:57,100 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 13:02:57,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:58,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:58,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-01-18 13:02:58,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:58,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-01-18 13:02:58,627 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:58,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 426 [2022-01-18 13:02:58,640 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:02:58,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 354 [2022-01-18 13:02:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:59,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965800822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:59,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:59,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 23] total 49 [2022-01-18 13:02:59,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234337281] [2022-01-18 13:02:59,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:59,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 13:02:59,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 13:02:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=1743, Unknown=50, NotChecked=0, Total=2352 [2022-01-18 13:02:59,926 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:00,849 INFO L93 Difference]: Finished difference Result 1865 states and 4861 transitions. [2022-01-18 13:03:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:03:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 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 109 [2022-01-18 13:03:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:00,859 INFO L225 Difference]: With dead ends: 1865 [2022-01-18 13:03:00,859 INFO L226 Difference]: Without dead ends: 1831 [2022-01-18 13:03:00,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1034, Invalid=3076, Unknown=50, NotChecked=0, Total=4160 [2022-01-18 13:03:00,861 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 772 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:00,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 1916 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 492 Invalid, 0 Unknown, 101 Unchecked, 0.3s Time] [2022-01-18 13:03:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-01-18 13:03:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1004. [2022-01-18 13:03:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 2.5692921236291126) internal successors, (2577), 1003 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2577 transitions. [2022-01-18 13:03:00,890 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2577 transitions. Word has length 109 [2022-01-18 13:03:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:00,890 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2577 transitions. [2022-01-18 13:03:00,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2577 transitions. [2022-01-18 13:03:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 13:03:00,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:00,893 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, 1, 1, 1, 1, 1, 1, 1, 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 13:03:00,927 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 13:03:01,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:01,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1367436801, now seen corresponding path program 1 times [2022-01-18 13:03:01,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:01,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365996198] [2022-01-18 13:03:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:01,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:03:01,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:01,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365996198] [2022-01-18 13:03:01,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365996198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:03:01,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:03:01,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:03:01,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404794417] [2022-01-18 13:03:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:03:01,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:03:01,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:03:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:03:01,161 INFO L87 Difference]: Start difference. First operand 1004 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:01,181 INFO L93 Difference]: Finished difference Result 983 states and 2495 transitions. [2022-01-18 13:03:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:03:01,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-18 13:03:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:01,186 INFO L225 Difference]: With dead ends: 983 [2022-01-18 13:03:01,186 INFO L226 Difference]: Without dead ends: 983 [2022-01-18 13:03:01,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:03:01,187 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 15 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:01,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:03:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-01-18 13:03:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 932. [2022-01-18 13:03:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.5381310418904404) internal successors, (2363), 931 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2363 transitions. [2022-01-18 13:03:01,207 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2363 transitions. Word has length 109 [2022-01-18 13:03:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:01,207 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2363 transitions. [2022-01-18 13:03:01,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2363 transitions. [2022-01-18 13:03:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 13:03:01,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:01,210 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, 1, 1, 1, 1, 1, 1, 1, 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 13:03:01,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 13:03:01,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -82845087, now seen corresponding path program 2 times [2022-01-18 13:03:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129986258] [2022-01-18 13:03:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:01,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:01,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:01,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129986258] [2022-01-18 13:03:01,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129986258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:01,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003570320] [2022-01-18 13:03:01,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:03:01,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:01,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:01,361 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 13:03:01,389 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 13:03:01,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:03:01,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:01,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 13:03:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:01,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:01,942 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:03:01,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:03:02,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:03:02,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:02,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:02,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 13:03:02,800 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 13:03:02,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:04,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:04,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-01-18 13:03:04,091 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:04,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 224 [2022-01-18 13:03:04,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:04,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 188 [2022-01-18 13:03:04,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:04,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 170 [2022-01-18 13:03:05,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 13:03:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:05,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003570320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:05,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:05,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-01-18 13:03:05,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417533241] [2022-01-18 13:03:05,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:05,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 13:03:05,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 13:03:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1885, Unknown=55, NotChecked=0, Total=2550 [2022-01-18 13:03:05,568 INFO L87 Difference]: Start difference. First operand 932 states and 2363 transitions. Second operand has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:07,247 INFO L93 Difference]: Finished difference Result 3828 states and 10142 transitions. [2022-01-18 13:03:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:03:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 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 109 [2022-01-18 13:03:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:07,260 INFO L225 Difference]: With dead ends: 3828 [2022-01-18 13:03:07,260 INFO L226 Difference]: Without dead ends: 2560 [2022-01-18 13:03:07,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1544, Invalid=5541, Unknown=55, NotChecked=0, Total=7140 [2022-01-18 13:03:07,263 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1195 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:07,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 2222 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 665 Invalid, 0 Unknown, 608 Unchecked, 0.4s Time] [2022-01-18 13:03:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-01-18 13:03:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1334. [2022-01-18 13:03:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-01-18 13:03:07,309 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-01-18 13:03:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-01-18 13:03:07,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-01-18 13:03:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 13:03:07,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:07,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:07,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 13:03:07,539 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,SelfDestructingSolverStorable6 [2022-01-18 13:03:07,540 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2079156415, now seen corresponding path program 3 times [2022-01-18 13:03:07,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434458564] [2022-01-18 13:03:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:07,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:03:07,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:07,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434458564] [2022-01-18 13:03:07,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434458564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:07,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127152712] [2022-01-18 13:03:07,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:03:07,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:07,632 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 13:03:07,633 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 13:03:07,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:03:07,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:07,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 13:03:07,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 13:03:07,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 13:03:08,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127152712] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:08,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:08,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 17 [2022-01-18 13:03:08,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134484121] [2022-01-18 13:03:08,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:08,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:03:08,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:03:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:03:08,294 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:08,629 INFO L93 Difference]: Finished difference Result 3437 states and 8954 transitions. [2022-01-18 13:03:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 13:03:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 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 115 [2022-01-18 13:03:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:08,642 INFO L225 Difference]: With dead ends: 3437 [2022-01-18 13:03:08,643 INFO L226 Difference]: Without dead ends: 2222 [2022-01-18 13:03:08,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:03:08,644 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1043 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:08,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 888 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:03:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-01-18 13:03:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1591. [2022-01-18 13:03:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.69811320754717) internal successors, (4290), 1590 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4290 transitions. [2022-01-18 13:03:08,690 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4290 transitions. Word has length 115 [2022-01-18 13:03:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:08,690 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4290 transitions. [2022-01-18 13:03:08,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4290 transitions. [2022-01-18 13:03:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:08,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:08,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:08,721 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 13:03:08,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:08,920 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1436284997, now seen corresponding path program 4 times [2022-01-18 13:03:08,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:08,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063198567] [2022-01-18 13:03:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:08,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 13:03:09,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:09,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063198567] [2022-01-18 13:03:09,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063198567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:03:09,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:03:09,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 13:03:09,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650714024] [2022-01-18 13:03:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:03:09,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:03:09,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:03:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:03:09,002 INFO L87 Difference]: Start difference. First operand 1591 states and 4290 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:09,035 INFO L93 Difference]: Finished difference Result 2542 states and 6823 transitions. [2022-01-18 13:03:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 13:03:09,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:09,047 INFO L225 Difference]: With dead ends: 2542 [2022-01-18 13:03:09,047 INFO L226 Difference]: Without dead ends: 2542 [2022-01-18 13:03:09,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:03:09,050 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:09,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:03:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-01-18 13:03:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2281. [2022-01-18 13:03:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2280 states have (on average 2.7092105263157893) internal successors, (6177), 2280 states have internal predecessors, (6177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 6177 transitions. [2022-01-18 13:03:09,126 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 6177 transitions. Word has length 130 [2022-01-18 13:03:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:09,127 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 6177 transitions. [2022-01-18 13:03:09,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 6177 transitions. [2022-01-18 13:03:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:09,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:09,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:09,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 13:03:09,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -997919845, now seen corresponding path program 1 times [2022-01-18 13:03:09,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:09,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338534623] [2022-01-18 13:03:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:09,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:03:09,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338534623] [2022-01-18 13:03:09,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338534623] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:09,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067167837] [2022-01-18 13:03:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:09,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:09,367 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 13:03:09,387 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 13:03:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:09,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 13:03:09,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:10,498 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:03:10,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-01-18 13:03:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:10,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:10,967 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 13:03:10,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-01-18 13:03:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:12,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067167837] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:12,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:12,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 20] total 41 [2022-01-18 13:03:12,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17417056] [2022-01-18 13:03:12,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:12,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 13:03:12,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 13:03:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1266, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:03:12,295 INFO L87 Difference]: Start difference. First operand 2281 states and 6177 transitions. Second operand has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:14,287 INFO L93 Difference]: Finished difference Result 13672 states and 36888 transitions. [2022-01-18 13:03:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 13:03:14,287 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:14,326 INFO L225 Difference]: With dead ends: 13672 [2022-01-18 13:03:14,326 INFO L226 Difference]: Without dead ends: 8898 [2022-01-18 13:03:14,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1418, Invalid=6238, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 13:03:14,329 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1915 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:14,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 3373 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:03:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-01-18 13:03:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4847. [2022-01-18 13:03:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 2.73937267849773) internal successors, (13275), 4846 states have internal predecessors, (13275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 13275 transitions. [2022-01-18 13:03:14,551 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 13275 transitions. Word has length 130 [2022-01-18 13:03:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:14,552 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 13275 transitions. [2022-01-18 13:03:14,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 13275 transitions. [2022-01-18 13:03:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 13:03:14,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:14,564 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:14,589 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 13:03:14,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:14,779 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:14,780 INFO L85 PathProgramCache]: Analyzing trace with hash -116894547, now seen corresponding path program 2 times [2022-01-18 13:03:14,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:14,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859914612] [2022-01-18 13:03:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:14,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 13:03:14,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:14,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859914612] [2022-01-18 13:03:14,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859914612] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:14,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292416853] [2022-01-18 13:03:14,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:03:14,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:14,963 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 13:03:14,963 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 13:03:15,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:03:15,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:15,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 13:03:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:15,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:15,470 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:03:15,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:03:15,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:03:16,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:16,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:16,548 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 13:03:16,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-01-18 13:03:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:16,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:18,316 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:18,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-01-18 13:03:18,348 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 13:03:18,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 744 [2022-01-18 13:03:18,377 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 13:03:18,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 588 [2022-01-18 13:03:18,407 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 13:03:18,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 510 [2022-01-18 13:03:21,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 13:03:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:21,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292416853] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:21,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:21,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 30, 28] total 59 [2022-01-18 13:03:21,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034260885] [2022-01-18 13:03:21,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:21,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-18 13:03:21,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-18 13:03:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=2583, Unknown=70, NotChecked=0, Total=3422 [2022-01-18 13:03:21,162 INFO L87 Difference]: Start difference. First operand 4847 states and 13275 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:24,241 INFO L93 Difference]: Finished difference Result 13094 states and 35710 transitions. [2022-01-18 13:03:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:03:24,241 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 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 130 [2022-01-18 13:03:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:24,277 INFO L225 Difference]: With dead ends: 13094 [2022-01-18 13:03:24,277 INFO L226 Difference]: Without dead ends: 12507 [2022-01-18 13:03:24,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1986, Invalid=7843, Unknown=71, NotChecked=0, Total=9900 [2022-01-18 13:03:24,280 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1970 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:24,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 3740 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1006 Invalid, 0 Unknown, 530 Unchecked, 0.6s Time] [2022-01-18 13:03:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2022-01-18 13:03:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 6938. [2022-01-18 13:03:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6937 states have (on average 2.7735332276200086) internal successors, (19240), 6937 states have internal predecessors, (19240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 19240 transitions. [2022-01-18 13:03:24,488 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 19240 transitions. Word has length 130 [2022-01-18 13:03:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:24,489 INFO L470 AbstractCegarLoop]: Abstraction has 6938 states and 19240 transitions. [2022-01-18 13:03:24,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 19240 transitions. [2022-01-18 13:03:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-18 13:03:24,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:24,506 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:24,531 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 13:03:24,719 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,SelfDestructingSolverStorable10 [2022-01-18 13:03:24,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:24,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2097043391, now seen corresponding path program 3 times [2022-01-18 13:03:24,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:24,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500342722] [2022-01-18 13:03:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:24,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:24,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500342722] [2022-01-18 13:03:24,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500342722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100162313] [2022-01-18 13:03:24,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:03:24,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:24,801 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 13:03:24,802 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 13:03:24,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 13:03:24,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 13:03:24,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:25,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:03:25,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100162313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:25,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:25,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-01-18 13:03:25,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076501098] [2022-01-18 13:03:25,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:25,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:03:25,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:03:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:03:25,541 INFO L87 Difference]: Start difference. First operand 6938 states and 19240 transitions. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:25,631 INFO L93 Difference]: Finished difference Result 12771 states and 35165 transitions. [2022-01-18 13:03:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 13:03:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 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 140 [2022-01-18 13:03:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:25,667 INFO L225 Difference]: With dead ends: 12771 [2022-01-18 13:03:25,668 INFO L226 Difference]: Without dead ends: 12531 [2022-01-18 13:03:25,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 13:03:25,668 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 534 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:25,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 339 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:03:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12531 states. [2022-01-18 13:03:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12531 to 9846. [2022-01-18 13:03:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 9845 states have (on average 2.7954291518537326) internal successors, (27521), 9845 states have internal predecessors, (27521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 27521 transitions. [2022-01-18 13:03:25,956 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 27521 transitions. Word has length 140 [2022-01-18 13:03:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 9846 states and 27521 transitions. [2022-01-18 13:03:25,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 27521 transitions. [2022-01-18 13:03:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 13:03:25,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:25,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:26,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 13:03:26,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:26,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1592177699, now seen corresponding path program 4 times [2022-01-18 13:03:26,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:26,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854543640] [2022-01-18 13:03:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:26,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:26,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854543640] [2022-01-18 13:03:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854543640] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:26,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938979947] [2022-01-18 13:03:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:03:26,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:26,484 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 13:03:26,512 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 13:03:26,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:03:26,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:26,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 13:03:26,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:27,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:27,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938979947] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:27,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:27,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2022-01-18 13:03:27,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799757971] [2022-01-18 13:03:27,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:27,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 13:03:27,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 13:03:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:03:27,906 INFO L87 Difference]: Start difference. First operand 9846 states and 27521 transitions. Second operand has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:29,186 INFO L93 Difference]: Finished difference Result 5188 states and 13822 transitions. [2022-01-18 13:03:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:03:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 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 141 [2022-01-18 13:03:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:29,197 INFO L225 Difference]: With dead ends: 5188 [2022-01-18 13:03:29,197 INFO L226 Difference]: Without dead ends: 3959 [2022-01-18 13:03:29,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1231, Invalid=4025, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 13:03:29,199 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1353 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:29,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 2516 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:03:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-01-18 13:03:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3954. [2022-01-18 13:03:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 2.7409562357703012) internal successors, (10835), 3953 states have internal predecessors, (10835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 10835 transitions. [2022-01-18 13:03:29,287 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 10835 transitions. Word has length 141 [2022-01-18 13:03:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:29,287 INFO L470 AbstractCegarLoop]: Abstraction has 3954 states and 10835 transitions. [2022-01-18 13:03:29,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 10835 transitions. [2022-01-18 13:03:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 13:03:29,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:29,295 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:29,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 13:03:29,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:29,511 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:29,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1338867506, now seen corresponding path program 5 times [2022-01-18 13:03:29,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:29,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226285799] [2022-01-18 13:03:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:29,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-18 13:03:29,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226285799] [2022-01-18 13:03:29,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226285799] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914029392] [2022-01-18 13:03:29,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:03:29,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:29,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:29,738 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 13:03:29,739 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 13:03:29,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 13:03:29,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:29,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 13:03:29,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:31,202 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 13:03:31,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 19 [2022-01-18 13:03:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:31,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:31,813 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 13:03:31,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-01-18 13:03:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:34,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914029392] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:34,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:34,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 25] total 50 [2022-01-18 13:03:34,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338922839] [2022-01-18 13:03:34,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:34,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 13:03:34,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 13:03:34,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2077, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:03:34,083 INFO L87 Difference]: Start difference. First operand 3954 states and 10835 transitions. Second operand has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:39,323 INFO L93 Difference]: Finished difference Result 27311 states and 75248 transitions. [2022-01-18 13:03:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 13:03:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 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 148 [2022-01-18 13:03:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:39,372 INFO L225 Difference]: With dead ends: 27311 [2022-01-18 13:03:39,373 INFO L226 Difference]: Without dead ends: 22586 [2022-01-18 13:03:39,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5760 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2849, Invalid=14707, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 13:03:39,377 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 3269 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 841 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:39,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 5084 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1417 Invalid, 0 Unknown, 841 Unchecked, 0.9s Time] [2022-01-18 13:03:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22586 states. [2022-01-18 13:03:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22586 to 10088. [2022-01-18 13:03:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 10087 states have (on average 2.8478239317933975) internal successors, (28726), 10087 states have internal predecessors, (28726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 28726 transitions. [2022-01-18 13:03:39,773 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 28726 transitions. Word has length 148 [2022-01-18 13:03:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:39,773 INFO L470 AbstractCegarLoop]: Abstraction has 10088 states and 28726 transitions. [2022-01-18 13:03:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 28726 transitions. [2022-01-18 13:03:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 13:03:39,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:39,790 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:03:39,813 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 13:03:40,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 13:03:40,012 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:03:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash -681406591, now seen corresponding path program 6 times [2022-01-18 13:03:40,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:40,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210667154] [2022-01-18 13:03:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:40,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:41,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210667154] [2022-01-18 13:03:41,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210667154] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082067573] [2022-01-18 13:03:41,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:03:41,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:41,806 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 13:03:41,806 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 13:03:41,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:03:41,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:41,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 13:03:41,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:42,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:03:43,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:43,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:03:44,397 INFO L353 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-01-18 13:03:44,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 18 [2022-01-18 13:03:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:44,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:47,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:03:47,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 176 [2022-01-18 13:03:47,801 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:03:47,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1106 treesize of output 1028 [2022-01-18 13:03:47,885 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:03:47,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 950 treesize of output 908 [2022-01-18 13:03:47,970 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:03:47,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 830 treesize of output 668 [2022-01-18 13:03:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:03:55,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082067573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:55,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:55,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 31] total 89 [2022-01-18 13:03:55,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032598406] [2022-01-18 13:03:55,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:55,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-18 13:03:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-18 13:03:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1451, Invalid=6329, Unknown=52, NotChecked=0, Total=7832 [2022-01-18 13:03:55,507 INFO L87 Difference]: Start difference. First operand 10088 states and 28726 transitions. Second operand has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:12,128 INFO L93 Difference]: Finished difference Result 39904 states and 109805 transitions. [2022-01-18 13:04:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 13:04:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 states have internal predecessors, (403), 0 states have call successors, (0), 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 151 [2022-01-18 13:04:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:12,203 INFO L225 Difference]: With dead ends: 39904 [2022-01-18 13:04:12,203 INFO L226 Difference]: Without dead ends: 29867 [2022-01-18 13:04:12,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18664 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=6544, Invalid=45160, Unknown=52, NotChecked=0, Total=51756 [2022-01-18 13:04:12,207 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 5932 mSDsluCounter, 10997 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5932 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1828 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:12,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5932 Valid, 10590 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3437 Invalid, 0 Unknown, 1828 Unchecked, 2.2s Time] [2022-01-18 13:04:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29867 states. [2022-01-18 13:04:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29867 to 14870. [2022-01-18 13:04:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14870 states, 14869 states have (on average 2.8387921178290405) internal successors, (42210), 14869 states have internal predecessors, (42210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14870 states to 14870 states and 42210 transitions. [2022-01-18 13:04:12,637 INFO L78 Accepts]: Start accepts. Automaton has 14870 states and 42210 transitions. Word has length 151 [2022-01-18 13:04:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:12,638 INFO L470 AbstractCegarLoop]: Abstraction has 14870 states and 42210 transitions. [2022-01-18 13:04:12,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 14870 states and 42210 transitions. [2022-01-18 13:04:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 13:04:12,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:12,658 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:04:12,681 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 13:04:12,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 13:04:12,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash 3636753, now seen corresponding path program 7 times [2022-01-18 13:04:12,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475447241] [2022-01-18 13:04:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:12,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:14,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475447241] [2022-01-18 13:04:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475447241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280393570] [2022-01-18 13:04:14,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:04:14,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:14,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:14,175 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 13:04:14,176 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 13:04:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:14,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 13:04:14,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:04:16,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:04:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:04:16,316 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:16,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 18 [2022-01-18 13:04:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:16,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:17,270 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-01-18 13:04:17,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 138 [2022-01-18 13:04:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:19,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280393570] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:19,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:19,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31, 25] total 81 [2022-01-18 13:04:19,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863723563] [2022-01-18 13:04:19,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:19,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 13:04:19,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 13:04:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=942, Invalid=5538, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 13:04:19,664 INFO L87 Difference]: Start difference. First operand 14870 states and 42210 transitions. Second operand has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:04:45,964 INFO L93 Difference]: Finished difference Result 85107 states and 239604 transitions. [2022-01-18 13:04:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2022-01-18 13:04:45,965 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 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 151 [2022-01-18 13:04:45,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:46,115 INFO L225 Difference]: With dead ends: 85107 [2022-01-18 13:04:46,115 INFO L226 Difference]: Without dead ends: 59861 [2022-01-18 13:04:46,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 252 SyntacticMatches, 4 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39965 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=10966, Invalid=91114, Unknown=0, NotChecked=0, Total=102080 [2022-01-18 13:04:46,121 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 7851 mSDsluCounter, 18090 mSDsCounter, 0 mSdLazyCounter, 7275 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7851 SdHoareTripleChecker+Valid, 17247 SdHoareTripleChecker+Invalid, 7767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 7275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:46,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7851 Valid, 17247 Invalid, 7767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 7275 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-18 13:04:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59861 states. [2022-01-18 13:04:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59861 to 22435. [2022-01-18 13:04:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22435 states, 22434 states have (on average 2.8016403672996346) internal successors, (62852), 22434 states have internal predecessors, (62852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22435 states to 22435 states and 62852 transitions. [2022-01-18 13:04:46,766 INFO L78 Accepts]: Start accepts. Automaton has 22435 states and 62852 transitions. Word has length 151 [2022-01-18 13:04:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:46,766 INFO L470 AbstractCegarLoop]: Abstraction has 22435 states and 62852 transitions. [2022-01-18 13:04:46,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 22435 states and 62852 transitions. [2022-01-18 13:04:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 13:04:46,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:46,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:04:46,805 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 13:04:46,989 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,SelfDestructingSolverStorable15 [2022-01-18 13:04:46,990 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:04:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash -687760343, now seen corresponding path program 8 times [2022-01-18 13:04:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609586283] [2022-01-18 13:04:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:46,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 13:04:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609586283] [2022-01-18 13:04:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609586283] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095065653] [2022-01-18 13:04:47,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:04:47,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:47,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:47,220 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 13:04:47,221 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 13:04:47,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:04:47,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:47,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 13:04:47,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:48,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:04:48,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:48,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:04:49,764 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-18 13:04:49,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 22 [2022-01-18 13:04:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:49,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:52,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:04:52,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 176 [2022-01-18 13:04:52,278 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:04:52,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 528 [2022-01-18 13:04:52,340 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:04:52,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 408 [2022-01-18 13:04:52,397 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 13:04:52,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 348 [2022-01-18 13:04:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:04:58,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095065653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:58,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:58,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 34] total 75 [2022-01-18 13:04:58,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327990632] [2022-01-18 13:04:58,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:58,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-18 13:04:58,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-18 13:04:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=4477, Unknown=67, NotChecked=0, Total=5550 [2022-01-18 13:04:58,117 INFO L87 Difference]: Start difference. First operand 22435 states and 62852 transitions. Second operand has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:10,571 INFO L93 Difference]: Finished difference Result 67217 states and 188505 transitions. [2022-01-18 13:05:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-01-18 13:05:10,571 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 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 151 [2022-01-18 13:05:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:10,698 INFO L225 Difference]: With dead ends: 67217 [2022-01-18 13:05:10,698 INFO L226 Difference]: Without dead ends: 54854 [2022-01-18 13:05:10,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 239 SyntacticMatches, 7 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20325 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=5686, Invalid=48303, Unknown=67, NotChecked=0, Total=54056 [2022-01-18 13:05:10,703 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 6108 mSDsluCounter, 13875 mSDsCounter, 0 mSdLazyCounter, 4953 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6108 SdHoareTripleChecker+Valid, 13172 SdHoareTripleChecker+Invalid, 7144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 4953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1772 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6108 Valid, 13172 Invalid, 7144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 4953 Invalid, 0 Unknown, 1772 Unchecked, 2.5s Time] [2022-01-18 13:05:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54854 states. [2022-01-18 13:05:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54854 to 24290. [2022-01-18 13:05:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24290 states, 24289 states have (on average 2.7980979044011693) internal successors, (67963), 24289 states have internal predecessors, (67963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24290 states to 24290 states and 67963 transitions. [2022-01-18 13:05:11,385 INFO L78 Accepts]: Start accepts. Automaton has 24290 states and 67963 transitions. Word has length 151 [2022-01-18 13:05:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:11,386 INFO L470 AbstractCegarLoop]: Abstraction has 24290 states and 67963 transitions. [2022-01-18 13:05:11,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24290 states and 67963 transitions. [2022-01-18 13:05:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-18 13:05:11,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:11,411 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:11,427 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 13:05:11,611 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,SelfDestructingSolverStorable16 [2022-01-18 13:05:11,612 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash -25017248, now seen corresponding path program 9 times [2022-01-18 13:05:11,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:11,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674884340] [2022-01-18 13:05:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:11,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-18 13:05:11,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674884340] [2022-01-18 13:05:11,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674884340] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978225352] [2022-01-18 13:05:11,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:05:11,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:11,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:11,880 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 13:05:11,881 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 13:05:12,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 13:05:12,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 13:05:12,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:13,050 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-01-18 13:05:13,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 24 [2022-01-18 13:05:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:13,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:13,549 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-18 13:05:13,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-18 13:05:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:14,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978225352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:14,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:14,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-01-18 13:05:14,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542732412] [2022-01-18 13:05:14,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:14,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 13:05:14,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 13:05:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-01-18 13:05:14,245 INFO L87 Difference]: Start difference. First operand 24290 states and 67963 transitions. Second operand has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:15,976 INFO L93 Difference]: Finished difference Result 44820 states and 124327 transitions. [2022-01-18 13:05:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:05:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 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 158 [2022-01-18 13:05:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:16,058 INFO L225 Difference]: With dead ends: 44820 [2022-01-18 13:05:16,058 INFO L226 Difference]: Without dead ends: 39120 [2022-01-18 13:05:16,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=753, Invalid=3537, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 13:05:16,060 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1312 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:16,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3486 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1008 Invalid, 0 Unknown, 28 Unchecked, 0.5s Time] [2022-01-18 13:05:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39120 states. [2022-01-18 13:05:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39120 to 26358. [2022-01-18 13:05:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 2.803126304207611) internal successors, (73882), 26357 states have internal predecessors, (73882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 73882 transitions. [2022-01-18 13:05:16,588 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 73882 transitions. Word has length 158 [2022-01-18 13:05:16,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:16,588 INFO L470 AbstractCegarLoop]: Abstraction has 26358 states and 73882 transitions. [2022-01-18 13:05:16,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 73882 transitions. [2022-01-18 13:05:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 13:05:16,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:16,616 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:05:16,633 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 13:05:16,816 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,SelfDestructingSolverStorable17 [2022-01-18 13:05:16,817 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:16,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash -914560453, now seen corresponding path program 10 times [2022-01-18 13:05:16,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:16,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363345404] [2022-01-18 13:05:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:16,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:16,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363345404] [2022-01-18 13:05:16,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363345404] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230324570] [2022-01-18 13:05:16,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:05:16,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:16,896 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 13:05:16,922 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 13:05:17,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:05:17,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:17,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 13:05:17,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:17,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:05:17,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230324570] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:17,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:17,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 9] total 13 [2022-01-18 13:05:17,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079544541] [2022-01-18 13:05:17,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:17,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 13:05:17,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 13:05:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:05:17,753 INFO L87 Difference]: Start difference. First operand 26358 states and 73882 transitions. Second operand has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:18,059 INFO L93 Difference]: Finished difference Result 42606 states and 119423 transitions. [2022-01-18 13:05:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 13:05:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 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 161 [2022-01-18 13:05:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:18,143 INFO L225 Difference]: With dead ends: 42606 [2022-01-18 13:05:18,144 INFO L226 Difference]: Without dead ends: 41886 [2022-01-18 13:05:18,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:05:18,144 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 704 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:18,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 398 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:05:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41886 states. [2022-01-18 13:05:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41886 to 31786. [2022-01-18 13:05:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31786 states, 31785 states have (on average 2.8185936762623878) internal successors, (89589), 31785 states have internal predecessors, (89589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31786 states to 31786 states and 89589 transitions. [2022-01-18 13:05:18,733 INFO L78 Accepts]: Start accepts. Automaton has 31786 states and 89589 transitions. Word has length 161 [2022-01-18 13:05:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:18,733 INFO L470 AbstractCegarLoop]: Abstraction has 31786 states and 89589 transitions. [2022-01-18 13:05:18,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 31786 states and 89589 transitions. [2022-01-18 13:05:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 13:05:18,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:18,770 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:18,793 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 13:05:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:18,983 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1197806162, now seen corresponding path program 11 times [2022-01-18 13:05:18,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345755562] [2022-01-18 13:05:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:18,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 13:05:19,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345755562] [2022-01-18 13:05:19,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345755562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734180342] [2022-01-18 13:05:19,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:05:19,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:19,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:19,332 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 13:05:19,333 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 13:05:19,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 13:05:19,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:19,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 13:05:19,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 38 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 13:05:20,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 13:05:21,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734180342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:21,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:21,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 51 [2022-01-18 13:05:21,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001100988] [2022-01-18 13:05:21,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:21,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 13:05:21,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 13:05:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=2055, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:05:21,137 INFO L87 Difference]: Start difference. First operand 31786 states and 89589 transitions. Second operand has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:22,759 INFO L93 Difference]: Finished difference Result 12899 states and 35557 transitions. [2022-01-18 13:05:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:05:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 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 165 [2022-01-18 13:05:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:22,779 INFO L225 Difference]: With dead ends: 12899 [2022-01-18 13:05:22,779 INFO L226 Difference]: Without dead ends: 10412 [2022-01-18 13:05:22,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2006, Invalid=6550, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 13:05:22,780 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 866 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:22,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 2537 Invalid, 760 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:05:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10412 states. [2022-01-18 13:05:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10412 to 10407. [2022-01-18 13:05:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10407 states, 10406 states have (on average 2.8152027676340574) internal successors, (29295), 10406 states have internal predecessors, (29295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 29295 transitions. [2022-01-18 13:05:22,938 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 29295 transitions. Word has length 165 [2022-01-18 13:05:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:22,939 INFO L470 AbstractCegarLoop]: Abstraction has 10407 states and 29295 transitions. [2022-01-18 13:05:22,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 29295 transitions. [2022-01-18 13:05:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 13:05:22,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:22,949 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:22,966 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 13:05:23,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:23,150 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash 761820768, now seen corresponding path program 12 times [2022-01-18 13:05:23,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:23,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523423511] [2022-01-18 13:05:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:23,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:24,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523423511] [2022-01-18 13:05:24,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523423511] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906585858] [2022-01-18 13:05:24,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:05:24,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:24,739 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 13:05:24,739 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 13:05:24,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 13:05:24,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:05:24,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 13:05:24,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:28,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:28,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:05:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:28,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 13:05:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:05:28,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:05:28,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 27 [2022-01-18 13:05:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:28,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:05:29,486 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 13:05:29,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 152 [2022-01-18 13:05:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:33,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906585858] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:05:33,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:05:33,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32, 27] total 86 [2022-01-18 13:05:33,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584710780] [2022-01-18 13:05:33,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:05:33,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 13:05:33,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:05:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 13:05:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=6483, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 13:05:33,777 INFO L87 Difference]: Start difference. First operand 10407 states and 29295 transitions. Second operand has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:05:47,824 INFO L93 Difference]: Finished difference Result 57929 states and 158063 transitions. [2022-01-18 13:05:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 13:05:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 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 169 [2022-01-18 13:05:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:05:47,936 INFO L225 Difference]: With dead ends: 57929 [2022-01-18 13:05:47,936 INFO L226 Difference]: Without dead ends: 53915 [2022-01-18 13:05:47,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17089 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=5579, Invalid=42163, Unknown=0, NotChecked=0, Total=47742 [2022-01-18 13:05:47,939 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 3524 mSDsluCounter, 12532 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 12334 SdHoareTripleChecker+Invalid, 6582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2810 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:05:47,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3524 Valid, 12334 Invalid, 6582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3542 Invalid, 0 Unknown, 2810 Unchecked, 1.8s Time] [2022-01-18 13:05:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53915 states. [2022-01-18 13:05:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53915 to 31578. [2022-01-18 13:05:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31578 states, 31577 states have (on average 2.873515533457897) internal successors, (90737), 31577 states have internal predecessors, (90737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31578 states to 31578 states and 90737 transitions. [2022-01-18 13:05:48,846 INFO L78 Accepts]: Start accepts. Automaton has 31578 states and 90737 transitions. Word has length 169 [2022-01-18 13:05:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:05:48,846 INFO L470 AbstractCegarLoop]: Abstraction has 31578 states and 90737 transitions. [2022-01-18 13:05:48,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:05:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 31578 states and 90737 transitions. [2022-01-18 13:05:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 13:05:48,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:05:48,869 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:48,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 13:05:49,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:49,072 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:05:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:05:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 841327630, now seen corresponding path program 13 times [2022-01-18 13:05:49,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:05:49,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137824287] [2022-01-18 13:05:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:05:49,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:05:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:50,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:05:50,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137824287] [2022-01-18 13:05:50,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137824287] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:05:50,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870504658] [2022-01-18 13:05:50,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:05:50,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:05:50,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:05:50,088 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 13:05:50,089 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 13:05:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:05:50,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-18 13:05:50,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:05:51,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:05:51,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:05:51,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:05:51,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:05:51,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:05:54,497 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-01-18 13:05:54,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2022-01-18 13:05:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:05:54,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:06:08,428 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 13:06:08,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 414 treesize of output 200 [2022-01-18 13:06:08,532 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 13:06:08,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 520 treesize of output 564 [2022-01-18 13:06:08,642 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 13:06:08,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 444 treesize of output 448 [2022-01-18 13:06:08,753 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 13:06:08,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 328 treesize of output 390 [2022-01-18 13:06:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:06:49,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870504658] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:06:49,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:06:49,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 41] total 107 [2022-01-18 13:06:49,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010131657] [2022-01-18 13:06:49,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:06:49,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 13:06:49,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:06:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 13:06:49,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1421, Invalid=9840, Unknown=81, NotChecked=0, Total=11342 [2022-01-18 13:06:49,814 INFO L87 Difference]: Start difference. First operand 31578 states and 90737 transitions. Second operand has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:07:01,355 INFO L93 Difference]: Finished difference Result 49648 states and 140605 transitions. [2022-01-18 13:07:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 13:07:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 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 169 [2022-01-18 13:07:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:07:01,454 INFO L225 Difference]: With dead ends: 49648 [2022-01-18 13:07:01,454 INFO L226 Difference]: Without dead ends: 49113 [2022-01-18 13:07:01,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 281 SyntacticMatches, 12 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11518 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=4253, Invalid=28244, Unknown=83, NotChecked=0, Total=32580 [2022-01-18 13:07:01,456 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 3813 mSDsluCounter, 9048 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3813 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 4595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2781 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:07:01,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3813 Valid, 9060 Invalid, 4595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1685 Invalid, 0 Unknown, 2781 Unchecked, 0.8s Time] [2022-01-18 13:07:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49113 states. [2022-01-18 13:07:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49113 to 32268. [2022-01-18 13:07:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32268 states, 32267 states have (on average 2.8703629094740757) internal successors, (92618), 32267 states have internal predecessors, (92618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32268 states to 32268 states and 92618 transitions. [2022-01-18 13:07:02,102 INFO L78 Accepts]: Start accepts. Automaton has 32268 states and 92618 transitions. Word has length 169 [2022-01-18 13:07:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:07:02,103 INFO L470 AbstractCegarLoop]: Abstraction has 32268 states and 92618 transitions. [2022-01-18 13:07:02,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 32268 states and 92618 transitions. [2022-01-18 13:07:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 13:07:02,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:07:02,125 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:02,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-18 13:07:02,326 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,SelfDestructingSolverStorable21 [2022-01-18 13:07:02,326 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:07:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:07:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1722352928, now seen corresponding path program 14 times [2022-01-18 13:07:02,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:07:02,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858155680] [2022-01-18 13:07:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:07:02,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:07:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:07:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:07:02,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:07:02,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858155680] [2022-01-18 13:07:02,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858155680] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:07:02,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225000915] [2022-01-18 13:07:02,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:07:02,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:02,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:07:02,567 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 13:07:02,569 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 13:07:02,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:07:02,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:07:02,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-18 13:07:02,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:07:04,683 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-18 13:07:04,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 25 [2022-01-18 13:07:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:04,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:07:05,635 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-18 13:07:05,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-18 13:07:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:07,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225000915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:07:07,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:07:07,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 34, 33] total 68 [2022-01-18 13:07:07,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985499173] [2022-01-18 13:07:07,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:07:07,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 13:07:07,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:07:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 13:07:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=3722, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 13:07:07,640 INFO L87 Difference]: Start difference. First operand 32268 states and 92618 transitions. Second operand has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:07:25,159 INFO L93 Difference]: Finished difference Result 166936 states and 471237 transitions. [2022-01-18 13:07:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2022-01-18 13:07:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 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 169 [2022-01-18 13:07:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:07:25,734 INFO L225 Difference]: With dead ends: 166936 [2022-01-18 13:07:25,734 INFO L226 Difference]: Without dead ends: 156383 [2022-01-18 13:07:25,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39259 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=9168, Invalid=87864, Unknown=0, NotChecked=0, Total=97032 [2022-01-18 13:07:25,739 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 5209 mSDsluCounter, 22736 mSDsCounter, 0 mSdLazyCounter, 8521 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 21823 SdHoareTripleChecker+Invalid, 8956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 8521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:07:25,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 21823 Invalid, 8956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-18 13:07:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156383 states. [2022-01-18 13:07:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156383 to 56136. [2022-01-18 13:07:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56136 states, 56135 states have (on average 2.9349603634096373) internal successors, (164754), 56135 states have internal predecessors, (164754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56136 states to 56136 states and 164754 transitions. [2022-01-18 13:07:28,456 INFO L78 Accepts]: Start accepts. Automaton has 56136 states and 164754 transitions. Word has length 169 [2022-01-18 13:07:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:07:28,456 INFO L470 AbstractCegarLoop]: Abstraction has 56136 states and 164754 transitions. [2022-01-18 13:07:28,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 56136 states and 164754 transitions. [2022-01-18 13:07:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:07:28,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:07:28,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:28,511 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 13:07:28,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:28,701 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:07:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:07:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953787, now seen corresponding path program 15 times [2022-01-18 13:07:28,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:07:28,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414323643] [2022-01-18 13:07:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:07:28,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:07:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:07:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:07:29,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:07:29,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414323643] [2022-01-18 13:07:29,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414323643] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:07:29,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128720543] [2022-01-18 13:07:29,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:07:29,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:29,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:07:29,024 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 13:07:29,027 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 13:07:29,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 13:07:29,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:07:29,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 13:07:29,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:07:31,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 13:07:31,540 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:07:31,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 24 [2022-01-18 13:07:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:31,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:07:32,723 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 13:07:32,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 172 [2022-01-18 13:07:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:34,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128720543] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:07:34,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:07:34,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31, 26] total 60 [2022-01-18 13:07:34,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63143937] [2022-01-18 13:07:34,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:07:34,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-18 13:07:34,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:07:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-18 13:07:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:07:34,422 INFO L87 Difference]: Start difference. First operand 56136 states and 164754 transitions. Second operand has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:07:49,981 INFO L93 Difference]: Finished difference Result 203253 states and 581359 transitions. [2022-01-18 13:07:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2022-01-18 13:07:49,981 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 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 172 [2022-01-18 13:07:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:07:50,679 INFO L225 Difference]: With dead ends: 203253 [2022-01-18 13:07:50,679 INFO L226 Difference]: Without dead ends: 177325 [2022-01-18 13:07:50,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35633 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=11766, Invalid=70890, Unknown=0, NotChecked=0, Total=82656 [2022-01-18 13:07:50,682 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 4611 mSDsluCounter, 13250 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 12648 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:07:50,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 12648 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 13:07:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177325 states. [2022-01-18 13:07:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177325 to 89273. [2022-01-18 13:07:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89273 states, 89272 states have (on average 2.9028474773725246) internal successors, (259143), 89272 states have internal predecessors, (259143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89273 states to 89273 states and 259143 transitions. [2022-01-18 13:07:53,713 INFO L78 Accepts]: Start accepts. Automaton has 89273 states and 259143 transitions. Word has length 172 [2022-01-18 13:07:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:07:53,713 INFO L470 AbstractCegarLoop]: Abstraction has 89273 states and 259143 transitions. [2022-01-18 13:07:53,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:07:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 89273 states and 259143 transitions. [2022-01-18 13:07:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:07:53,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:07:53,756 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:54,015 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forcibly destroying the process [2022-01-18 13:07:54,016 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 13:07:54,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:54,016 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:07:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:07:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -966067763, now seen corresponding path program 16 times [2022-01-18 13:07:54,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:07:54,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125799000] [2022-01-18 13:07:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:07:54,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:07:54,023 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] The stream was forcibly closed: stdIn [2022-01-18 13:07:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:07:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:55,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:07:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125799000] [2022-01-18 13:07:55,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125799000] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:07:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867252512] [2022-01-18 13:07:55,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:07:55,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:07:55,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:07:55,060 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 13:07:55,064 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 13:07:55,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:07:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:07:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 90 conjunts are in the unsatisfiable core [2022-01-18 13:07:55,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:07:57,332 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 13:07:57,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 24 [2022-01-18 13:07:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:07:57,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:07:58,801 INFO L353 Elim1Store]: treesize reduction 288, result has 41.3 percent of original size [2022-01-18 13:07:58,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 242 [2022-01-18 13:08:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:01,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867252512] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:08:01,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:08:01,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 28] total 79 [2022-01-18 13:08:01,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180746240] [2022-01-18 13:08:01,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:08:01,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 13:08:01,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:08:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 13:08:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=5202, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 13:08:01,220 INFO L87 Difference]: Start difference. First operand 89273 states and 259143 transitions. Second operand has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:08:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:08:40,213 INFO L93 Difference]: Finished difference Result 447373 states and 1288067 transitions. [2022-01-18 13:08:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2022-01-18 13:08:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 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 172 [2022-01-18 13:08:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:08:41,692 INFO L225 Difference]: With dead ends: 447373 [2022-01-18 13:08:41,692 INFO L226 Difference]: Without dead ends: 392375 [2022-01-18 13:08:41,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 294 SyntacticMatches, 6 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48114 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=17454, Invalid=110352, Unknown=0, NotChecked=0, Total=127806 [2022-01-18 13:08:41,697 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 5342 mSDsluCounter, 28894 mSDsCounter, 0 mSdLazyCounter, 11308 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 28090 SdHoareTripleChecker+Invalid, 11683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 11308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:08:41,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 28090 Invalid, 11683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [375 Valid, 11308 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-18 13:08:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392375 states. [2022-01-18 13:08:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392375 to 123901. [2022-01-18 13:08:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123901 states, 123900 states have (on average 2.8646811945117028) internal successors, (354934), 123900 states have internal predecessors, (354934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:08:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123901 states to 123901 states and 354934 transitions. [2022-01-18 13:08:47,193 INFO L78 Accepts]: Start accepts. Automaton has 123901 states and 354934 transitions. Word has length 172 [2022-01-18 13:08:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:08:47,194 INFO L470 AbstractCegarLoop]: Abstraction has 123901 states and 354934 transitions. [2022-01-18 13:08:47,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:08:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 123901 states and 354934 transitions. [2022-01-18 13:08:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:08:47,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:08:47,241 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:47,258 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 13:08:47,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:08:47,442 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:08:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:08:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -5535603, now seen corresponding path program 17 times [2022-01-18 13:08:47,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:08:47,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931738065] [2022-01-18 13:08:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:08:47,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:08:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:08:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:08:48,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:08:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931738065] [2022-01-18 13:08:48,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931738065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:08:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886448165] [2022-01-18 13:08:48,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:08:48,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:08:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:08:48,884 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 13:08:48,887 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 13:08:49,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 13:08:49,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:08:49,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-18 13:08:49,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:08:50,006 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 13:08:50,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 24 [2022-01-18 13:08:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:08:50,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:08:50,970 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-01-18 13:08:50,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-01-18 13:08:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:08:51,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886448165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:08:51,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:08:51,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 14, 13] total 51 [2022-01-18 13:08:51,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428797302] [2022-01-18 13:08:51,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:08:51,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 13:08:51,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:08:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 13:08:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2269, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:08:51,930 INFO L87 Difference]: Start difference. First operand 123901 states and 354934 transitions. Second operand has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:09:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:09:00,107 INFO L93 Difference]: Finished difference Result 196765 states and 557528 transitions. [2022-01-18 13:09:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 13:09:00,107 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 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 172 [2022-01-18 13:09:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:09:00,856 INFO L225 Difference]: With dead ends: 196765 [2022-01-18 13:09:00,856 INFO L226 Difference]: Without dead ends: 189954 [2022-01-18 13:09:00,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8963 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2331, Invalid=22475, Unknown=0, NotChecked=0, Total=24806 [2022-01-18 13:09:00,858 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2100 mSDsluCounter, 9171 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 9053 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:09:00,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 9053 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 13:09:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189954 states. [2022-01-18 13:09:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189954 to 123972. [2022-01-18 13:09:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123972 states, 123971 states have (on average 2.8463511627719384) internal successors, (352865), 123971 states have internal predecessors, (352865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:09:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123972 states to 123972 states and 352865 transitions. [2022-01-18 13:09:04,256 INFO L78 Accepts]: Start accepts. Automaton has 123972 states and 352865 transitions. Word has length 172 [2022-01-18 13:09:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:09:04,257 INFO L470 AbstractCegarLoop]: Abstraction has 123972 states and 352865 transitions. [2022-01-18 13:09:04,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:09:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 123972 states and 352865 transitions. [2022-01-18 13:09:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:09:04,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:09:04,302 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:04,327 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 13:09:04,515 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,SelfDestructingSolverStorable25 [2022-01-18 13:09:04,515 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:09:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:09:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -979234251, now seen corresponding path program 18 times [2022-01-18 13:09:04,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:09:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623520768] [2022-01-18 13:09:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:09:04,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:09:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:09:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:09:07,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:09:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623520768] [2022-01-18 13:09:07,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623520768] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:09:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236118411] [2022-01-18 13:09:07,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:09:07,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:09:07,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:09:07,102 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 13:09:07,103 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 13:09:07,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 13:09:07,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:09:07,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 13:09:07,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:09:08,812 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 13:09:08,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 24 [2022-01-18 13:09:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 13:09:08,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:09:10,158 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-01-18 13:09:10,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 254 [2022-01-18 13:09:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:09:11,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236118411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:09:11,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:09:11,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 18, 13] total 63 [2022-01-18 13:09:11,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350888193] [2022-01-18 13:09:11,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:09:11,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 13:09:11,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:09:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 13:09:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3613, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:09:11,468 INFO L87 Difference]: Start difference. First operand 123972 states and 352865 transitions. Second operand has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:11:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:11:30,641 INFO L93 Difference]: Finished difference Result 590550 states and 1689677 transitions. [2022-01-18 13:11:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 849 states. [2022-01-18 13:11:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 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 172 [2022-01-18 13:11:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:11:33,074 INFO L225 Difference]: With dead ends: 590550 [2022-01-18 13:11:33,074 INFO L226 Difference]: Without dead ends: 529843 [2022-01-18 13:11:33,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 890 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357309 ImplicationChecksByTransitivity, 124.4s TimeCoverageRelationStatistics Valid=47982, Invalid=746790, Unknown=0, NotChecked=0, Total=794772 [2022-01-18 13:11:33,114 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 7127 mSDsluCounter, 40057 mSDsCounter, 0 mSdLazyCounter, 15957 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7127 SdHoareTripleChecker+Valid, 37861 SdHoareTripleChecker+Invalid, 16499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 15957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:11:33,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7127 Valid, 37861 Invalid, 16499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [542 Valid, 15957 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-18 13:11:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529843 states. [2022-01-18 13:11:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529843 to 167291. [2022-01-18 13:11:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167291 states, 167290 states have (on average 2.8589395660230736) internal successors, (478272), 167290 states have internal predecessors, (478272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:11:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167291 states to 167291 states and 478272 transitions. [2022-01-18 13:11:41,577 INFO L78 Accepts]: Start accepts. Automaton has 167291 states and 478272 transitions. Word has length 172 [2022-01-18 13:11:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:11:41,579 INFO L470 AbstractCegarLoop]: Abstraction has 167291 states and 478272 transitions. [2022-01-18 13:11:41,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:11:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 167291 states and 478272 transitions. [2022-01-18 13:11:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:11:41,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:11:41,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:41,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 13:11:41,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 13:11:41,866 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:11:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:11:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash -18702091, now seen corresponding path program 19 times [2022-01-18 13:11:41,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:11:41,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146678816] [2022-01-18 13:11:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:11:41,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:11:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:11:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 13:11:42,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:11:42,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146678816] [2022-01-18 13:11:42,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146678816] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:11:42,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594177892] [2022-01-18 13:11:42,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:11:42,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:11:42,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:11:42,148 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 13:11:42,149 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 13:11:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:11:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 109 conjunts are in the unsatisfiable core [2022-01-18 13:11:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:11:43,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:43,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:43,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:11:43,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:11:43,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:11:45,421 INFO L353 Elim1Store]: treesize reduction 170, result has 1.7 percent of original size [2022-01-18 13:11:45,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 30 [2022-01-18 13:11:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:11:45,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:11:57,062 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 13:11:57,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 552 treesize of output 254 [2022-01-18 13:11:57,248 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 13:11:57,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1412 treesize of output 1380 [2022-01-18 13:11:57,405 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 13:11:57,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1204 treesize of output 1060 [2022-01-18 13:11:57,560 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 13:11:57,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 884 treesize of output 900 [2022-01-18 13:12:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:12:29,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594177892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:12:29,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:12:29,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 41, 39] total 83 [2022-01-18 13:12:29,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678687722] [2022-01-18 13:12:29,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:12:29,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-18 13:12:29,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:12:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-18 13:12:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=5934, Unknown=80, NotChecked=0, Total=6806 [2022-01-18 13:12:29,786 INFO L87 Difference]: Start difference. First operand 167291 states and 478272 transitions. Second operand has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:12:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:12:42,883 INFO L93 Difference]: Finished difference Result 258596 states and 738808 transitions. [2022-01-18 13:12:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 13:12:42,884 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 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 172 [2022-01-18 13:12:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:12:43,636 INFO L225 Difference]: With dead ends: 258596 [2022-01-18 13:12:43,636 INFO L226 Difference]: Without dead ends: 249497 [2022-01-18 13:12:43,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 276 SyntacticMatches, 11 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15941 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4236, Invalid=41266, Unknown=80, NotChecked=0, Total=45582 [2022-01-18 13:12:43,638 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 3786 mSDsluCounter, 18022 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3786 SdHoareTripleChecker+Valid, 17238 SdHoareTripleChecker+Invalid, 8829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5290 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:12:43,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3786 Valid, 17238 Invalid, 8829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3341 Invalid, 0 Unknown, 5290 Unchecked, 1.7s Time] [2022-01-18 13:12:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249497 states. [2022-01-18 13:12:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249497 to 171992. [2022-01-18 13:12:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171992 states, 171991 states have (on average 2.8509224319877204) internal successors, (490333), 171991 states have internal predecessors, (490333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:12:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171992 states to 171992 states and 490333 transitions. [2022-01-18 13:12:48,835 INFO L78 Accepts]: Start accepts. Automaton has 171992 states and 490333 transitions. Word has length 172 [2022-01-18 13:12:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:12:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 171992 states and 490333 transitions. [2022-01-18 13:12:48,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:12:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 171992 states and 490333 transitions. [2022-01-18 13:12:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 13:12:48,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:12:48,890 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:48,907 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 13:12:49,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 13:12:49,091 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:12:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:12:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 368158285, now seen corresponding path program 20 times [2022-01-18 13:12:49,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:12:49,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471210372] [2022-01-18 13:12:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:12:49,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:12:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:12:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:12:51,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:12:51,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471210372] [2022-01-18 13:12:51,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471210372] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:12:51,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674178159] [2022-01-18 13:12:51,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:12:51,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:12:51,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:12:51,687 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 13:12:51,688 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 13:12:51,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:12:51,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:12:51,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 106 conjunts are in the unsatisfiable core [2022-01-18 13:12:51,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:12:53,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 13:12:53,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:12:53,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 13:12:55,251 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 13:12:55,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 24 [2022-01-18 13:12:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:12:55,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:12:59,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 13:12:59,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 361 treesize of output 229 [2022-01-18 13:12:59,180 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 13:12:59,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 680 treesize of output 707 [2022-01-18 13:12:59,329 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 13:12:59,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 575 treesize of output 545 [2022-01-18 13:12:59,448 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 13:12:59,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 413 treesize of output 464 [2022-01-18 13:13:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:13:24,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674178159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:13:24,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:13:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 34] total 103 [2022-01-18 13:13:24,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575353946] [2022-01-18 13:13:24,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:13:24,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-18 13:13:24,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:13:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-18 13:13:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1327, Invalid=9099, Unknown=80, NotChecked=0, Total=10506 [2022-01-18 13:13:24,783 INFO L87 Difference]: Start difference. First operand 171992 states and 490333 transitions. Second operand has 103 states, 103 states have (on average 4.524271844660194) internal successors, (466), 103 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 13:15:02,587 WARN L244 SmtUtils]: Removed 22 from assertion stack [2022-01-18 13:15:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 313 states. [2022-01-18 13:15:02,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 307 SyntacticMatches, 33 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64113 ImplicationChecksByTransitivity, 90.9s TimeCoverageRelationStatistics Valid=17975, Invalid=145565, Unknown=80, NotChecked=0, Total=163620 [2022-01-18 13:15:02,599 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:15:02,599 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 14557 mSDsluCounter, 41230 mSDsCounter, 0 mSdLazyCounter, 13804 mSolverCounterSat, 1221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14557 SdHoareTripleChecker+Valid, 41081 SdHoareTripleChecker+Invalid, 18011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1221 IncrementalHoareTripleChecker+Valid, 13804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2986 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:15:02,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14557 Valid, 41081 Invalid, 18011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1221 Valid, 13804 Invalid, 0 Unknown, 2986 Unchecked, 9.0s Time] [2022-01-18 13:15:02,599 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 13:15:02,600 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 13:15:02,617 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 13:15:02,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:15:02,802 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (171992states) and FLOYD_HOARE automaton (currently 313 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 175 for 45ms.. [2022-01-18 13:15:02,803 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 13:15:02,803 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 13:15:02,807 INFO L732 BasicCegarLoop]: Path program histogram: [20, 4, 1, 1, 1, 1, 1] [2022-01-18 13:15:02,809 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:15:02,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:15:02,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:15:02 BasicIcfg [2022-01-18 13:15:02,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:15:02,811 INFO L158 Benchmark]: Toolchain (without parser) took 730313.06ms. Allocated memory was 390.1MB in the beginning and 11.4GB in the end (delta: 11.0GB). Free memory was 335.0MB in the beginning and 5.7GB in the end (delta: -5.3GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2022-01-18 13:15:02,811 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory is still 351.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:15:02,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.30ms. Allocated memory was 390.1MB in the beginning and 509.6MB in the end (delta: 119.5MB). Free memory was 334.7MB in the beginning and 481.5MB in the end (delta: -146.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.0GB. [2022-01-18 13:15:02,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.34ms. Allocated memory is still 509.6MB. Free memory was 481.5MB in the beginning and 479.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:15:02,812 INFO L158 Benchmark]: Boogie Preprocessor took 23.72ms. Allocated memory is still 509.6MB. Free memory was 479.4MB in the beginning and 478.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:15:02,812 INFO L158 Benchmark]: RCFGBuilder took 460.74ms. Allocated memory is still 509.6MB. Free memory was 478.3MB in the beginning and 459.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-18 13:15:02,813 INFO L158 Benchmark]: TraceAbstraction took 729571.45ms. Allocated memory was 509.6MB in the beginning and 11.4GB in the end (delta: 10.9GB). Free memory was 458.4MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2022-01-18 13:15:02,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory is still 351.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 218.30ms. Allocated memory was 390.1MB in the beginning and 509.6MB in the end (delta: 119.5MB). Free memory was 334.7MB in the beginning and 481.5MB in the end (delta: -146.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.34ms. Allocated memory is still 509.6MB. Free memory was 481.5MB in the beginning and 479.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.72ms. Allocated memory is still 509.6MB. Free memory was 479.4MB in the beginning and 478.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 460.74ms. Allocated memory is still 509.6MB. Free memory was 478.3MB in the beginning and 459.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 729571.45ms. Allocated memory was 509.6MB in the beginning and 11.4GB in the end (delta: 10.9GB). Free memory was 458.4MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 5.6GB. 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: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (171992states) and FLOYD_HOARE automaton (currently 313 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 175 for 45ms.. - TimeoutResultAtElement [Line: 89]: 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 (171992states) and FLOYD_HOARE automaton (currently 313 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 175 for 45ms.. - TimeoutResultAtElement [Line: 88]: 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 (171992states) and FLOYD_HOARE automaton (currently 313 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 175 for 45ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 729.4s, OverallIterations: 29, TraceHistogramMax: 4, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.6s, AutomataDifference: 437.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85282 SdHoareTripleChecker+Valid, 51.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85282 mSDsluCounter, 258345 SdHoareTripleChecker+Invalid, 44.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19575 IncrementalHoareTripleChecker+Unchecked, 264847 mSDsCounter, 5572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89625 IncrementalHoareTripleChecker+Invalid, 114772 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5572 mSolverCounterUnsat, 9174 mSDtfsCounter, 89625 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10844 GetRequests, 6184 SyntacticMatches, 116 SemanticMatches, 4543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697006 ImplicationChecksByTransitivity, 395.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171992occurred in iteration=28, InterpolantAutomatonStates: 3215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 1135805 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 245.9s InterpolantComputationTime, 7602 NumberOfCodeBlocks, 7515 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 11025 ConstructedInterpolants, 427 QuantifiedInterpolants, 282484 SizeOfPredicates, 711 NumberOfNonLiveVariables, 7651 ConjunctsInSsa, 1462 ConjunctsInUnsatCore, 75 InterpolantComputations, 6 PerfectInterpolantSequences, 1306/5802 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