/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 11:36:11,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 11:36:11,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 11:36:11,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 11:36:11,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 11:36:11,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 11:36:11,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 11:36:11,901 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.epf [2022-02-15 11:36:11,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 11:36:11,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 11:36:11,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 11:36:11,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 11:36:11,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 11:36:11,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 11:36:11,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 11:36:11,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 11:36:11,927 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 11:36:11,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 11:36:11,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 11:36:11,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 11:36:11,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 11:36:11,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 11:36:11,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:36:11,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 11:36:11,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 11:36:11,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 11:36:11,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 11:36:11,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 11:36:12,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 11:36:12,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 11:36:12,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 11:36:12,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 11:36:12,136 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 11:36:12,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-02-15 11:36:12,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4507a2b42/276fa3d2a9ea473baa6bbbfca846a7f7/FLAG78c3eec06 [2022-02-15 11:36:12,542 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 11:36:12,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-02-15 11:36:12,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4507a2b42/276fa3d2a9ea473baa6bbbfca846a7f7/FLAG78c3eec06 [2022-02-15 11:36:12,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4507a2b42/276fa3d2a9ea473baa6bbbfca846a7f7 [2022-02-15 11:36:12,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 11:36:12,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 11:36:12,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 11:36:12,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 11:36:12,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 11:36:12,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4c4e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12, skipping insertion in model container [2022-02-15 11:36:12,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 11:36:12,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 11:36:12,722 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/parallel-misc-2.wvr.c[2554,2567] [2022-02-15 11:36:12,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:36:12,730 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 11:36:12,743 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/parallel-misc-2.wvr.c[2554,2567] [2022-02-15 11:36:12,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:36:12,753 INFO L208 MainTranslator]: Completed translation [2022-02-15 11:36:12,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12 WrapperNode [2022-02-15 11:36:12,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 11:36:12,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 11:36:12,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 11:36:12,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 11:36:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,776 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-02-15 11:36:12,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 11:36:12,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 11:36:12,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 11:36:12,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 11:36:12,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 11:36:12,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 11:36:12,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 11:36:12,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 11:36:12,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (1/1) ... [2022-02-15 11:36:12,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:36:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:12,816 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) [2022-02-15 11:36:12,824 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 [2022-02-15 11:36:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 11:36:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 11:36:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-15 11:36:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 11:36:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 11:36:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 11:36:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 11:36:12,843 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 11:36:12,916 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 11:36:12,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 11:36:13,052 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 11:36:13,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 11:36:13,067 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-15 11:36:13,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:36:13 BoogieIcfgContainer [2022-02-15 11:36:13,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 11:36:13,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 11:36:13,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 11:36:13,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 11:36:13,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:36:12" (1/3) ... [2022-02-15 11:36:13,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62f0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:36:13, skipping insertion in model container [2022-02-15 11:36:13,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:12" (2/3) ... [2022-02-15 11:36:13,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62f0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:36:13, skipping insertion in model container [2022-02-15 11:36:13,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:36:13" (3/3) ... [2022-02-15 11:36:13,074 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-02-15 11:36:13,077 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 11:36:13,077 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 11:36:13,077 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 11:36:13,077 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 11:36:13,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:13,157 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 11:36:13,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 11:36:13,221 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, mLazyFiniteAutomaton=false, 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 [2022-02-15 11:36:13,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 11:36:13,237 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 104 transitions, 224 flow [2022-02-15 11:36:13,293 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 11:36:13,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:13,310 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] [2022-02-15 11:36:13,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash 91702260, now seen corresponding path program 1 times [2022-02-15 11:36:13,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:13,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114523715] [2022-02-15 11:36:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:13,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:13,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:13,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114523715] [2022-02-15 11:36:13,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114523715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:13,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:13,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 11:36:13,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956332187] [2022-02-15 11:36:13,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:13,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 11:36:13,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 11:36:13,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 11:36:13,562 INFO L87 Difference]: Start difference. First operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:13,612 INFO L93 Difference]: Finished difference Result 636 states and 1679 transitions. [2022-02-15 11:36:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 11:36:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-02-15 11:36:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:13,634 INFO L225 Difference]: With dead ends: 636 [2022-02-15 11:36:13,635 INFO L226 Difference]: Without dead ends: 634 [2022-02-15 11:36:13,636 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 [2022-02-15 11:36:13,639 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:13,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-02-15 11:36:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-02-15 11:36:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 2.6492890995260665) internal successors, (1677), 633 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1677 transitions. [2022-02-15 11:36:13,714 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1677 transitions. Word has length 69 [2022-02-15 11:36:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:13,714 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1677 transitions. [2022-02-15 11:36:13,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1677 transitions. [2022-02-15 11:36:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 11:36:13,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:13,720 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] [2022-02-15 11:36:13,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 11:36:13,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash -638556778, now seen corresponding path program 1 times [2022-02-15 11:36:13,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:13,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383289510] [2022-02-15 11:36:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:13,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:13,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:13,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383289510] [2022-02-15 11:36:13,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383289510] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:13,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:13,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:36:13,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252334634] [2022-02-15 11:36:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:13,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:36:13,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:36:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:36:13,985 INFO L87 Difference]: Start difference. First operand 634 states and 1677 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:14,083 INFO L93 Difference]: Finished difference Result 899 states and 2413 transitions. [2022-02-15 11:36:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-02-15 11:36:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:14,088 INFO L225 Difference]: With dead ends: 899 [2022-02-15 11:36:14,088 INFO L226 Difference]: Without dead ends: 848 [2022-02-15 11:36:14,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-15 11:36:14,092 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:14,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 324 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-02-15 11:36:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 689. [2022-02-15 11:36:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 2.627906976744186) internal successors, (1808), 688 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1808 transitions. [2022-02-15 11:36:14,116 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1808 transitions. Word has length 69 [2022-02-15 11:36:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:14,117 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1808 transitions. [2022-02-15 11:36:14,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1808 transitions. [2022-02-15 11:36:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 11:36:14,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:14,120 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] [2022-02-15 11:36:14,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 11:36:14,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -849231512, now seen corresponding path program 1 times [2022-02-15 11:36:14,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:14,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40308664] [2022-02-15 11:36:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:14,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:14,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:14,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40308664] [2022-02-15 11:36:14,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40308664] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:14,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:14,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:36:14,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090208213] [2022-02-15 11:36:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:14,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:36:14,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:36:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:14,289 INFO L87 Difference]: Start difference. First operand 689 states and 1808 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:14,420 INFO L93 Difference]: Finished difference Result 1079 states and 2914 transitions. [2022-02-15 11:36:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:14,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-02-15 11:36:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:14,425 INFO L225 Difference]: With dead ends: 1079 [2022-02-15 11:36:14,426 INFO L226 Difference]: Without dead ends: 1046 [2022-02-15 11:36:14,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:36:14,426 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 168 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:14,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 276 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-02-15 11:36:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 656. [2022-02-15 11:36:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.645801526717557) internal successors, (1733), 655 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1733 transitions. [2022-02-15 11:36:14,441 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1733 transitions. Word has length 76 [2022-02-15 11:36:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:14,442 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1733 transitions. [2022-02-15 11:36:14,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1733 transitions. [2022-02-15 11:36:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 11:36:14,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:14,445 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] [2022-02-15 11:36:14,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 11:36:14,446 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -871538449, now seen corresponding path program 1 times [2022-02-15 11:36:14,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:14,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491234958] [2022-02-15 11:36:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:14,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:14,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:14,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491234958] [2022-02-15 11:36:14,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491234958] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:14,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137510144] [2022-02-15 11:36:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:14,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:14,650 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) [2022-02-15 11:36:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 11:36:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:14,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 11:36:14,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:15,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:17,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (not (< (mod c_~i1~0 4294967296) (mod .cse0 4294967296))) (<= (+ c_~i2~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* (div c_~i2~0 4294967296) 4294967296)))))) is different from false [2022-02-15 11:36:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-15 11:36:17,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137510144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:17,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:17,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-02-15 11:36:17,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404568016] [2022-02-15 11:36:17,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:17,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 11:36:17,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 11:36:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=91, Unknown=1, NotChecked=20, Total=156 [2022-02-15 11:36:17,467 INFO L87 Difference]: Start difference. First operand 656 states and 1733 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:17,676 INFO L93 Difference]: Finished difference Result 1525 states and 4125 transitions. [2022-02-15 11:36:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 11:36:17,676 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-02-15 11:36:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:17,682 INFO L225 Difference]: With dead ends: 1525 [2022-02-15 11:36:17,682 INFO L226 Difference]: Without dead ends: 1525 [2022-02-15 11:36:17,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=87, Invalid=156, Unknown=1, NotChecked=28, Total=272 [2022-02-15 11:36:17,683 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 420 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 516 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2022-02-15 11:36:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2022-02-15 11:36:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 727. [2022-02-15 11:36:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 2.6639118457300275) internal successors, (1934), 726 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1934 transitions. [2022-02-15 11:36:17,701 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1934 transitions. Word has length 76 [2022-02-15 11:36:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:17,701 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1934 transitions. [2022-02-15 11:36:17,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1934 transitions. [2022-02-15 11:36:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 11:36:17,703 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:17,703 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] [2022-02-15 11:36:17,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:17,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:17,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash -83304769, now seen corresponding path program 2 times [2022-02-15 11:36:17,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:17,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175101808] [2022-02-15 11:36:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:17,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:18,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:18,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175101808] [2022-02-15 11:36:18,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175101808] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:18,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:18,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:36:18,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859945721] [2022-02-15 11:36:18,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:36:18,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:36:18,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:18,020 INFO L87 Difference]: Start difference. First operand 727 states and 1934 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:18,170 INFO L93 Difference]: Finished difference Result 1021 states and 2739 transitions. [2022-02-15 11:36:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-02-15 11:36:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:18,175 INFO L225 Difference]: With dead ends: 1021 [2022-02-15 11:36:18,175 INFO L226 Difference]: Without dead ends: 1009 [2022-02-15 11:36:18,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:36:18,176 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 183 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:18,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 265 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-02-15 11:36:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 715. [2022-02-15 11:36:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.6624649859943976) internal successors, (1901), 714 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1901 transitions. [2022-02-15 11:36:18,193 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1901 transitions. Word has length 76 [2022-02-15 11:36:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:18,194 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1901 transitions. [2022-02-15 11:36:18,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1901 transitions. [2022-02-15 11:36:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 11:36:18,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:18,196 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] [2022-02-15 11:36:18,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 11:36:18,196 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1188116900, now seen corresponding path program 2 times [2022-02-15 11:36:18,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:18,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242520794] [2022-02-15 11:36:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:18,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:18,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:18,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242520794] [2022-02-15 11:36:18,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242520794] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:18,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:18,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:36:18,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928897435] [2022-02-15 11:36:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:18,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:36:18,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:36:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:18,268 INFO L87 Difference]: Start difference. First operand 715 states and 1901 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:18,355 INFO L93 Difference]: Finished difference Result 1035 states and 2804 transitions. [2022-02-15 11:36:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-02-15 11:36:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:18,360 INFO L225 Difference]: With dead ends: 1035 [2022-02-15 11:36:18,360 INFO L226 Difference]: Without dead ends: 1035 [2022-02-15 11:36:18,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:36:18,363 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 118 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:18,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 294 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-02-15 11:36:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 735. [2022-02-15 11:36:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.664850136239782) internal successors, (1956), 734 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1956 transitions. [2022-02-15 11:36:18,385 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1956 transitions. Word has length 76 [2022-02-15 11:36:18,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:18,386 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1956 transitions. [2022-02-15 11:36:18,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:18,386 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1956 transitions. [2022-02-15 11:36:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:36:18,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:18,390 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] [2022-02-15 11:36:18,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 11:36:18,390 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1745682415, now seen corresponding path program 1 times [2022-02-15 11:36:18,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:18,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293780539] [2022-02-15 11:36:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:18,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:18,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:18,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293780539] [2022-02-15 11:36:18,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293780539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:18,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659354147] [2022-02-15 11:36:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:18,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:18,563 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) [2022-02-15 11:36:18,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 11:36:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:18,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-15 11:36:18,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:18,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:19,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659354147] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:19,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:19,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-02-15 11:36:19,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345438502] [2022-02-15 11:36:19,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:19,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 11:36:19,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 11:36:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-02-15 11:36:19,375 INFO L87 Difference]: Start difference. First operand 735 states and 1956 transitions. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:21,086 INFO L93 Difference]: Finished difference Result 2989 states and 8606 transitions. [2022-02-15 11:36:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 11:36:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 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 83 [2022-02-15 11:36:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:21,098 INFO L225 Difference]: With dead ends: 2989 [2022-02-15 11:36:21,098 INFO L226 Difference]: Without dead ends: 2989 [2022-02-15 11:36:21,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=546, Invalid=2210, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 11:36:21,100 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1756 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:21,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 1072 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 11:36:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-02-15 11:36:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1831. [2022-02-15 11:36:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 2.8136612021857923) internal successors, (5149), 1830 states have internal predecessors, (5149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 5149 transitions. [2022-02-15 11:36:21,160 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 5149 transitions. Word has length 83 [2022-02-15 11:36:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:21,160 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 5149 transitions. [2022-02-15 11:36:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 5149 transitions. [2022-02-15 11:36:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:21,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:21,164 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 11:36:21,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:21,383 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 [2022-02-15 11:36:21,383 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1200855136, now seen corresponding path program 2 times [2022-02-15 11:36:21,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:21,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233742007] [2022-02-15 11:36:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:21,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:36:21,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:21,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233742007] [2022-02-15 11:36:21,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233742007] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:21,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:21,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 11:36:21,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454791420] [2022-02-15 11:36:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 11:36:21,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 11:36:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:36:21,452 INFO L87 Difference]: Start difference. First operand 1831 states and 5149 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:21,493 INFO L93 Difference]: Finished difference Result 3104 states and 8558 transitions. [2022-02-15 11:36:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 11:36:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:21,506 INFO L225 Difference]: With dead ends: 3104 [2022-02-15 11:36:21,508 INFO L226 Difference]: Without dead ends: 3104 [2022-02-15 11:36:21,508 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 [2022-02-15 11:36:21,509 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 92 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:21,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 317 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-02-15 11:36:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2777. [2022-02-15 11:36:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 2.805835734870317) internal successors, (7789), 2776 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 7789 transitions. [2022-02-15 11:36:21,578 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 7789 transitions. Word has length 97 [2022-02-15 11:36:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:21,579 INFO L470 AbstractCegarLoop]: Abstraction has 2777 states and 7789 transitions. [2022-02-15 11:36:21,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 7789 transitions. [2022-02-15 11:36:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:21,585 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:21,585 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 11:36:21,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 11:36:21,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -272535424, now seen corresponding path program 1 times [2022-02-15 11:36:21,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:21,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422816726] [2022-02-15 11:36:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:21,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-15 11:36:21,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:21,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422816726] [2022-02-15 11:36:21,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422816726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:21,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:21,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 11:36:21,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147156925] [2022-02-15 11:36:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 11:36:21,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:21,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 11:36:21,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:36:21,640 INFO L87 Difference]: Start difference. First operand 2777 states and 7789 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:21,683 INFO L93 Difference]: Finished difference Result 4564 states and 12641 transitions. [2022-02-15 11:36:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 11:36:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:21,700 INFO L225 Difference]: With dead ends: 4564 [2022-02-15 11:36:21,700 INFO L226 Difference]: Without dead ends: 4564 [2022-02-15 11:36:21,700 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 [2022-02-15 11:36:21,701 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 77 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:21,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 292 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-02-15 11:36:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4174. [2022-02-15 11:36:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.8023005032350827) internal successors, (11694), 4173 states have internal predecessors, (11694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11694 transitions. [2022-02-15 11:36:21,784 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11694 transitions. Word has length 97 [2022-02-15 11:36:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 4174 states and 11694 transitions. [2022-02-15 11:36:21,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11694 transitions. [2022-02-15 11:36:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:21,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:21,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:21,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 11:36:21,793 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash 83701920, now seen corresponding path program 1 times [2022-02-15 11:36:21,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:21,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702617471] [2022-02-15 11:36:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:21,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:21,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:21,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702617471] [2022-02-15 11:36:21,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702617471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:21,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369456944] [2022-02-15 11:36:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:21,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:21,933 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) [2022-02-15 11:36:21,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 11:36:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:22,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:22,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:22,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369456944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:22,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:22,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-02-15 11:36:22,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302339407] [2022-02-15 11:36:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 11:36:22,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 11:36:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:36:22,369 INFO L87 Difference]: Start difference. First operand 4174 states and 11694 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:22,596 INFO L93 Difference]: Finished difference Result 8287 states and 23042 transitions. [2022-02-15 11:36:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 11:36:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:22,615 INFO L225 Difference]: With dead ends: 8287 [2022-02-15 11:36:22,615 INFO L226 Difference]: Without dead ends: 8236 [2022-02-15 11:36:22,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-02-15 11:36:22,616 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 245 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:22,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 797 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2022-02-15 11:36:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 7238. [2022-02-15 11:36:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7238 states, 7237 states have (on average 2.8301782506563495) internal successors, (20482), 7237 states have internal predecessors, (20482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 20482 transitions. [2022-02-15 11:36:22,770 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 20482 transitions. Word has length 97 [2022-02-15 11:36:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 7238 states and 20482 transitions. [2022-02-15 11:36:22,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 20482 transitions. [2022-02-15 11:36:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:22,785 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:22,785 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:22,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:23,005 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1555304934, now seen corresponding path program 2 times [2022-02-15 11:36:23,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:23,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871827658] [2022-02-15 11:36:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:23,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:23,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:23,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871827658] [2022-02-15 11:36:23,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871827658] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:23,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42943728] [2022-02-15 11:36:23,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:36:23,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:23,155 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) [2022-02-15 11:36:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 11:36:23,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:36:23,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:23,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:23,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:23,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:23,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42943728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:23,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:23,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-02-15 11:36:23,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968811749] [2022-02-15 11:36:23,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:23,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 11:36:23,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 11:36:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:36:23,575 INFO L87 Difference]: Start difference. First operand 7238 states and 20482 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:23,773 INFO L93 Difference]: Finished difference Result 9212 states and 25754 transitions. [2022-02-15 11:36:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 11:36:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:23,795 INFO L225 Difference]: With dead ends: 9212 [2022-02-15 11:36:23,796 INFO L226 Difference]: Without dead ends: 9161 [2022-02-15 11:36:23,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-02-15 11:36:23,796 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 207 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:23,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1029 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2022-02-15 11:36:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 8462. [2022-02-15 11:36:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 2.8311074341094433) internal successors, (23954), 8461 states have internal predecessors, (23954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 23954 transitions. [2022-02-15 11:36:24,001 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 23954 transitions. Word has length 97 [2022-02-15 11:36:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:24,002 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 23954 transitions. [2022-02-15 11:36:24,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 23954 transitions. [2022-02-15 11:36:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:24,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:24,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:24,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-15 11:36:24,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:24,232 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash 723241996, now seen corresponding path program 3 times [2022-02-15 11:36:24,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:24,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730480743] [2022-02-15 11:36:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:24,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:24,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:24,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730480743] [2022-02-15 11:36:24,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730480743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:24,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647279348] [2022-02-15 11:36:24,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:36:24,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:24,360 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) [2022-02-15 11:36:24,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 11:36:24,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 11:36:24,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:24,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:24,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:24,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:24,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647279348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:24,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:24,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-02-15 11:36:24,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917144562] [2022-02-15 11:36:24,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:24,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:36:24,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:36:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:36:24,836 INFO L87 Difference]: Start difference. First operand 8462 states and 23954 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:25,077 INFO L93 Difference]: Finished difference Result 11939 states and 33104 transitions. [2022-02-15 11:36:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 11:36:25,078 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:25,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:25,110 INFO L225 Difference]: With dead ends: 11939 [2022-02-15 11:36:25,110 INFO L226 Difference]: Without dead ends: 11888 [2022-02-15 11:36:25,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:36:25,111 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 229 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:25,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 1223 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11888 states. [2022-02-15 11:36:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11888 to 8938. [2022-02-15 11:36:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8937 states have (on average 2.8375293722725745) internal successors, (25359), 8937 states have internal predecessors, (25359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 25359 transitions. [2022-02-15 11:36:25,358 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 25359 transitions. Word has length 97 [2022-02-15 11:36:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:25,358 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 25359 transitions. [2022-02-15 11:36:25,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 25359 transitions. [2022-02-15 11:36:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:25,376 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:25,376 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:25,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:25,591 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,SelfDestructingSolverStorable11 [2022-02-15 11:36:25,591 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 32170892, now seen corresponding path program 4 times [2022-02-15 11:36:25,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:25,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789806473] [2022-02-15 11:36:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:25,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:25,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:25,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789806473] [2022-02-15 11:36:25,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789806473] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:25,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426948277] [2022-02-15 11:36:25,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:36:25,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:25,738 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) [2022-02-15 11:36:25,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 11:36:25,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:36:25,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:25,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:25,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:26,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:26,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426948277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:26,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:26,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-02-15 11:36:26,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626354547] [2022-02-15 11:36:26,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:26,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:36:26,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:36:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:36:26,186 INFO L87 Difference]: Start difference. First operand 8938 states and 25359 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:26,489 INFO L93 Difference]: Finished difference Result 14338 states and 40111 transitions. [2022-02-15 11:36:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 11:36:26,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:26,522 INFO L225 Difference]: With dead ends: 14338 [2022-02-15 11:36:26,523 INFO L226 Difference]: Without dead ends: 14287 [2022-02-15 11:36:26,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:36:26,523 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 315 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:26,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1344 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-02-15 11:36:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 11322. [2022-02-15 11:36:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11322 states, 11321 states have (on average 2.8554014663015637) internal successors, (32326), 11321 states have internal predecessors, (32326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 32326 transitions. [2022-02-15 11:36:26,752 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 32326 transitions. Word has length 97 [2022-02-15 11:36:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:26,752 INFO L470 AbstractCegarLoop]: Abstraction has 11322 states and 32326 transitions. [2022-02-15 11:36:26,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 32326 transitions. [2022-02-15 11:36:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:26,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:26,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:26,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:26,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:26,988 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1845224352, now seen corresponding path program 5 times [2022-02-15 11:36:26,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:26,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897199723] [2022-02-15 11:36:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:26,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:27,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:27,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897199723] [2022-02-15 11:36:27,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897199723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:27,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869929982] [2022-02-15 11:36:27,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:36:27,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:27,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:27,196 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) [2022-02-15 11:36:27,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 11:36:27,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:36:27,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:27,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:27,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:27,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:36:27,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869929982] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:27,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:27,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-02-15 11:36:27,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960884310] [2022-02-15 11:36:27,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 11:36:27,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 11:36:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:36:27,781 INFO L87 Difference]: Start difference. First operand 11322 states and 32326 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:28,009 INFO L93 Difference]: Finished difference Result 13231 states and 37401 transitions. [2022-02-15 11:36:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 11:36:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:28,050 INFO L225 Difference]: With dead ends: 13231 [2022-02-15 11:36:28,050 INFO L226 Difference]: Without dead ends: 13180 [2022-02-15 11:36:28,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-02-15 11:36:28,051 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 207 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:28,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1088 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2022-02-15 11:36:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 12118. [2022-02-15 11:36:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 2.8667161838738964) internal successors, (34736), 12117 states have internal predecessors, (34736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 34736 transitions. [2022-02-15 11:36:28,379 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 34736 transitions. Word has length 97 [2022-02-15 11:36:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:28,379 INFO L470 AbstractCegarLoop]: Abstraction has 12118 states and 34736 transitions. [2022-02-15 11:36:28,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 34736 transitions. [2022-02-15 11:36:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:28,406 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:28,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:28,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:28,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:28,610 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash -524522290, now seen corresponding path program 6 times [2022-02-15 11:36:28,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:28,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647704486] [2022-02-15 11:36:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:28,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:28,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:28,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647704486] [2022-02-15 11:36:28,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647704486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:28,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862865270] [2022-02-15 11:36:28,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:36:28,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:28,735 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) [2022-02-15 11:36:28,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 11:36:28,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 11:36:28,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:28,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:28,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:29,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:29,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862865270] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:29,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:29,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-02-15 11:36:29,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349830005] [2022-02-15 11:36:29,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:29,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:36:29,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:36:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:36:29,185 INFO L87 Difference]: Start difference. First operand 12118 states and 34736 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:29,521 INFO L93 Difference]: Finished difference Result 17960 states and 50551 transitions. [2022-02-15 11:36:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 11:36:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:29,560 INFO L225 Difference]: With dead ends: 17960 [2022-02-15 11:36:29,561 INFO L226 Difference]: Without dead ends: 17909 [2022-02-15 11:36:29,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:36:29,563 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 293 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:29,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 1412 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:36:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2022-02-15 11:36:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 10198. [2022-02-15 11:36:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8494655290771798) internal successors, (29056), 10197 states have internal predecessors, (29056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 29056 transitions. [2022-02-15 11:36:29,828 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 29056 transitions. Word has length 97 [2022-02-15 11:36:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:29,829 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 29056 transitions. [2022-02-15 11:36:29,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 29056 transitions. [2022-02-15 11:36:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 11:36:29,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:29,845 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:29,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-02-15 11:36:30,048 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,SelfDestructingSolverStorable14 [2022-02-15 11:36:30,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1215593394, now seen corresponding path program 7 times [2022-02-15 11:36:30,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:30,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789022576] [2022-02-15 11:36:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:30,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:30,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:30,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789022576] [2022-02-15 11:36:30,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789022576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:30,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297372084] [2022-02-15 11:36:30,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 11:36:30,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:30,252 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) [2022-02-15 11:36:30,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 11:36:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:30,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 11:36:30,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:30,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:36:30,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297372084] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:30,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:30,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-02-15 11:36:30,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828155048] [2022-02-15 11:36:30,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:30,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 11:36:30,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 11:36:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 11:36:30,715 INFO L87 Difference]: Start difference. First operand 10198 states and 29056 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:30,960 INFO L93 Difference]: Finished difference Result 13802 states and 38346 transitions. [2022-02-15 11:36:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 11:36:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-02-15 11:36:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:30,986 INFO L225 Difference]: With dead ends: 13802 [2022-02-15 11:36:30,987 INFO L226 Difference]: Without dead ends: 13751 [2022-02-15 11:36:30,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:36:30,987 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 286 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:30,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1234 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:36:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2022-02-15 11:36:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 9330. [2022-02-15 11:36:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 9329 states have (on average 2.836424054025083) internal successors, (26461), 9329 states have internal predecessors, (26461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 26461 transitions. [2022-02-15 11:36:31,175 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 26461 transitions. Word has length 97 [2022-02-15 11:36:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:31,175 INFO L470 AbstractCegarLoop]: Abstraction has 9330 states and 26461 transitions. [2022-02-15 11:36:31,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 26461 transitions. [2022-02-15 11:36:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 11:36:31,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:31,190 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-15 11:36:31,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:31,395 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,SelfDestructingSolverStorable15 [2022-02-15 11:36:31,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1544870038, now seen corresponding path program 8 times [2022-02-15 11:36:31,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:31,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12052094] [2022-02-15 11:36:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:31,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:31,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:31,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12052094] [2022-02-15 11:36:31,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12052094] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:31,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139437402] [2022-02-15 11:36:31,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:36:31,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:31,696 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) [2022-02-15 11:36:31,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 11:36:32,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:36:32,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:32,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-15 11:36:32,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:33,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:37,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139437402] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:37,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:37,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 37 [2022-02-15 11:36:37,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735071073] [2022-02-15 11:36:37,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 11:36:37,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 11:36:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 11:36:37,011 INFO L87 Difference]: Start difference. First operand 9330 states and 26461 transitions. Second operand has 37 states, 37 states have (on average 5.162162162162162) internal successors, (191), 37 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:52,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:36:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:53,005 INFO L93 Difference]: Finished difference Result 20361 states and 56782 transitions. [2022-02-15 11:36:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 11:36:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.162162162162162) internal successors, (191), 37 states have internal predecessors, (191), 0 states have call successors, (0), 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 104 [2022-02-15 11:36:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:53,041 INFO L225 Difference]: With dead ends: 20361 [2022-02-15 11:36:53,042 INFO L226 Difference]: Without dead ends: 19923 [2022-02-15 11:36:53,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=889, Invalid=3803, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 11:36:53,043 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1428 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:53,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 3637 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 11:36:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2022-02-15 11:36:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 11963. [2022-02-15 11:36:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11963 states, 11962 states have (on average 2.802457782979435) internal successors, (33523), 11962 states have internal predecessors, (33523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11963 states to 11963 states and 33523 transitions. [2022-02-15 11:36:53,330 INFO L78 Accepts]: Start accepts. Automaton has 11963 states and 33523 transitions. Word has length 104 [2022-02-15 11:36:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:53,331 INFO L470 AbstractCegarLoop]: Abstraction has 11963 states and 33523 transitions. [2022-02-15 11:36:53,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.162162162162162) internal successors, (191), 37 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11963 states and 33523 transitions. [2022-02-15 11:36:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 11:36:53,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:53,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-15 11:36:53,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:53,555 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,SelfDestructingSolverStorable16 [2022-02-15 11:36:53,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:36:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:53,556 INFO L85 PathProgramCache]: Analyzing trace with hash -763458489, now seen corresponding path program 9 times [2022-02-15 11:36:53,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:53,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871758018] [2022-02-15 11:36:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:53,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:53,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:53,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871758018] [2022-02-15 11:36:53,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871758018] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:53,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274319340] [2022-02-15 11:36:53,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:36:53,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:53,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:53,861 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) [2022-02-15 11:36:53,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 11:36:54,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 11:36:54,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:54,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-15 11:36:54,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:58,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274319340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:58,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:58,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2022-02-15 11:36:58,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696687591] [2022-02-15 11:36:58,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:58,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 11:36:58,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 11:36:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 11:36:58,609 INFO L87 Difference]: Start difference. First operand 11963 states and 33523 transitions. Second operand has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:25,100 INFO L93 Difference]: Finished difference Result 26705 states and 72728 transitions. [2022-02-15 11:37:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 11:37:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 0 states have call successors, (0), 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 104 [2022-02-15 11:37:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:25,153 INFO L225 Difference]: With dead ends: 26705 [2022-02-15 11:37:25,153 INFO L226 Difference]: Without dead ends: 25547 [2022-02-15 11:37:25,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 190 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=1216, Invalid=6266, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 11:37:25,155 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1757 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1146 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:25,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1757 Valid, 4574 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1092 Invalid, 0 Unknown, 1146 Unchecked, 3.0s Time] [2022-02-15 11:37:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25547 states. [2022-02-15 11:37:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25547 to 19379. [2022-02-15 11:37:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19379 states, 19378 states have (on average 2.8087521932087935) internal successors, (54428), 19378 states have internal predecessors, (54428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19379 states to 19379 states and 54428 transitions. [2022-02-15 11:37:25,594 INFO L78 Accepts]: Start accepts. Automaton has 19379 states and 54428 transitions. Word has length 104 [2022-02-15 11:37:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:25,594 INFO L470 AbstractCegarLoop]: Abstraction has 19379 states and 54428 transitions. [2022-02-15 11:37:25,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 19379 states and 54428 transitions. [2022-02-15 11:37:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 11:37:25,716 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:25,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-15 11:37:25,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-15 11:37:25,920 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,SelfDestructingSolverStorable17 [2022-02-15 11:37:25,920 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:37:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 412786434, now seen corresponding path program 10 times [2022-02-15 11:37:25,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:25,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981820574] [2022-02-15 11:37:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:25,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:26,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:26,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981820574] [2022-02-15 11:37:26,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981820574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:26,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316115359] [2022-02-15 11:37:26,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:37:26,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:26,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:26,155 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) [2022-02-15 11:37:26,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 11:37:26,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:37:26,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-15 11:37:26,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:27,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:35,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316115359] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:37:35,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:37:35,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 44 [2022-02-15 11:37:35,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318599954] [2022-02-15 11:37:35,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:37:35,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 11:37:35,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:35,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 11:37:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1656, Unknown=1, NotChecked=0, Total=1892 [2022-02-15 11:37:35,675 INFO L87 Difference]: Start difference. First operand 19379 states and 54428 transitions. Second operand has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:40:13,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:40:14,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:44:00,512 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_~N~0 2))) (let ((.cse2 (mod .cse4 4294967296))) (let ((.cse0 (< (mod (+ 3 c_~i2~0) 4294967296) .cse2)) (.cse1 (not (< (mod (+ 2 c_~i2~0) 4294967296) .cse2))) (.cse5 (* |c_thread2Thread1of1ForFork1_#t~post4| (- 1)))) (and (or .cse0 .cse1 (< (mod (+ c_~i1~0 1) 4294967296) .cse2)) (or .cse0 .cse1 (< (mod (+ |c_thread1Thread1of1ForFork0_#t~post3| 1) 4294967296) .cse2)) (< (mod c_~i2~0 4294967296) .cse2) (< (mod (+ c_~i2~0 1) 4294967296) .cse2) (< (mod (+ |c_thread2Thread1of1ForFork1_#t~post4| 1) 4294967296) .cse2) (let ((.cse3 (* (div c_~i2~0 4294967296) 4294967296))) (<= (+ c_~i1~0 .cse3) (+ 2 c_~i2~0 (* (div (+ c_~i1~0 (- 2) (* (- 1) c_~i2~0) .cse3) 4294967296) 4294967296)))) (<= .cse4 (+ (* (div (+ .cse5 4294967293) 4294967296) 4294967296) |c_thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div .cse4 4294967296)) 2)) (<= c_~i1~0 (+ |c_thread2Thread1of1ForFork1_#t~post4| (* (div (+ c_~i1~0 (- 2) .cse5) 4294967296) 4294967296) 2)))))) is different from false [2022-02-15 11:44:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:44:52,828 INFO L93 Difference]: Finished difference Result 127174 states and 354820 transitions. [2022-02-15 11:44:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2022-02-15 11:44:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 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 104 [2022-02-15 11:44:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:44:53,143 INFO L225 Difference]: With dead ends: 127174 [2022-02-15 11:44:53,143 INFO L226 Difference]: Without dead ends: 125051 [2022-02-15 11:44:53,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 204 SyntacticMatches, 6 SemanticMatches, 292 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34486 ImplicationChecksByTransitivity, 418.3s TimeCoverageRelationStatistics Valid=9596, Invalid=75948, Unknown=16, NotChecked=582, Total=86142 [2022-02-15 11:44:53,152 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 3619 mSDsluCounter, 11046 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 9777 SdHoareTripleChecker+Invalid, 6488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2152 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:44:53,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3619 Valid, 9777 Invalid, 6488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4049 Invalid, 1 Unknown, 2152 Unchecked, 26.0s Time] [2022-02-15 11:44:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125051 states. [2022-02-15 11:44:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125051 to 42154. [2022-02-15 11:44:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42154 states, 42153 states have (on average 2.8564277750100824) internal successors, (120407), 42153 states have internal predecessors, (120407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:44:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42154 states to 42154 states and 120407 transitions. [2022-02-15 11:44:54,688 INFO L78 Accepts]: Start accepts. Automaton has 42154 states and 120407 transitions. Word has length 104 [2022-02-15 11:44:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:44:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 42154 states and 120407 transitions. [2022-02-15 11:44:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:44:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42154 states and 120407 transitions. [2022-02-15 11:44:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 11:44:54,745 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:44:54,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-15 11:44:54,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-15 11:44:54,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:54,948 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:44:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:44:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -871180865, now seen corresponding path program 11 times [2022-02-15 11:44:54,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:44:54,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949793809] [2022-02-15 11:44:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:44:54,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:44:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:44:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:44:55,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:44:55,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949793809] [2022-02-15 11:44:55,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949793809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:44:55,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814463011] [2022-02-15 11:44:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:44:55,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:44:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:44:55,620 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) [2022-02-15 11:44:55,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 11:44:55,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 11:44:55,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:44:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 11:44:55,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:44:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 11:44:56,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:44:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 11:44:58,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814463011] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:44:58,865 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:44:58,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 37 [2022-02-15 11:44:58,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150537197] [2022-02-15 11:44:58,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:44:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 11:44:58,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:44:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 11:44:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 11:44:58,867 INFO L87 Difference]: Start difference. First operand 42154 states and 120407 transitions. Second operand has 37 states, 37 states have (on average 5.72972972972973) internal successors, (212), 37 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:45:48,827 WARN L228 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 48 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 11:46:10,227 WARN L228 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 63 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 11:46:15,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:46:17,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:46:19,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:46:24,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:47:09,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:47:11,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:47:33,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:47:36,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 11:47:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:47:37,974 INFO L93 Difference]: Finished difference Result 92063 states and 256690 transitions. [2022-02-15 11:47:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-15 11:47:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.72972972972973) internal successors, (212), 37 states have internal predecessors, (212), 0 states have call successors, (0), 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 104 [2022-02-15 11:47:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:47:38,176 INFO L225 Difference]: With dead ends: 92063 [2022-02-15 11:47:38,176 INFO L226 Difference]: Without dead ends: 92063 [2022-02-15 11:47:38,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5546 ImplicationChecksByTransitivity, 132.6s TimeCoverageRelationStatistics Valid=1645, Invalid=16979, Unknown=8, NotChecked=0, Total=18632 [2022-02-15 11:47:38,177 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 2751 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 149 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 439 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:47:38,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2751 Valid, 8728 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2915 Invalid, 6 Unknown, 439 Unchecked, 28.5s Time] [2022-02-15 11:47:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92063 states. [2022-02-15 11:47:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92063 to 69752. [2022-02-15 11:47:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69752 states, 69751 states have (on average 2.8484609539648176) internal successors, (198683), 69751 states have internal predecessors, (198683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:47:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69752 states to 69752 states and 198683 transitions. [2022-02-15 11:47:40,056 INFO L78 Accepts]: Start accepts. Automaton has 69752 states and 198683 transitions. Word has length 104 [2022-02-15 11:47:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:47:40,056 INFO L470 AbstractCegarLoop]: Abstraction has 69752 states and 198683 transitions. [2022-02-15 11:47:40,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.72972972972973) internal successors, (212), 37 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:47:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 69752 states and 198683 transitions. [2022-02-15 11:47:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-15 11:47:40,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:47:40,278 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-02-15 11:47:40,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-15 11:47:40,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-02-15 11:47:40,482 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:47:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:47:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1720372476, now seen corresponding path program 12 times [2022-02-15 11:47:40,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:47:40,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746879555] [2022-02-15 11:47:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:47:40,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:47:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:47:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:41,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:47:41,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746879555] [2022-02-15 11:47:41,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746879555] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:47:41,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316435100] [2022-02-15 11:47:41,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:47:41,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:47:41,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:47:41,633 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) [2022-02-15 11:47:41,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 11:47:41,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 11:47:41,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:47:41,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-15 11:47:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:47:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:47:53,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:48:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:48:44,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316435100] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:48:44,375 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:48:44,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 53 [2022-02-15 11:48:44,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626858380] [2022-02-15 11:48:44,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:48:44,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 11:48:44,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:48:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 11:48:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2479, Unknown=9, NotChecked=0, Total=2756 [2022-02-15 11:48:44,376 INFO L87 Difference]: Start difference. First operand 69752 states and 198683 transitions. Second operand has 53 states, 53 states have (on average 4.735849056603773) internal successors, (251), 53 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:49:28,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-02-15 11:50:36,995 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-15 11:50:36,995 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 [2022-02-15 11:50:37,577 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-15 11:50:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 11:50:37,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 211 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 153.7s TimeCoverageRelationStatistics Valid=755, Invalid=5072, Unknown=25, NotChecked=0, Total=5852 [2022-02-15 11:50:37,579 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 1097 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 11:50:37,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 4371 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1346 Invalid, 1 Unknown, 520 Unchecked, 12.7s Time] [2022-02-15 11:50:37,580 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-15 11:50:37,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-15 11:50:37,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:50:37,781 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (69752states) and FLOYD_HOARE automaton (currently 31 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 73 for 0ms.. [2022-02-15 11:50:37,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-15 11:50:37,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-15 11:50:37,784 INFO L732 BasicCegarLoop]: Path program histogram: [12, 2, 2, 2, 1, 1, 1] [2022-02-15 11:50:37,785 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 11:50:37,785 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 11:50:37,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:50:37 BasicIcfg [2022-02-15 11:50:37,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 11:50:37,787 INFO L158 Benchmark]: Toolchain (without parser) took 865225.62ms. Allocated memory was 194.0MB in the beginning and 722.5MB in the end (delta: 528.5MB). Free memory was 139.7MB in the beginning and 276.4MB in the end (delta: -136.7MB). Peak memory consumption was 391.8MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,787 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory was 156.1MB in the beginning and 156.0MB in the end (delta: 74.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 11:50:37,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.75ms. Allocated memory was 194.0MB in the beginning and 246.4MB in the end (delta: 52.4MB). Free memory was 139.5MB in the beginning and 219.0MB in the end (delta: -79.6MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.49ms. Allocated memory is still 246.4MB. Free memory was 219.0MB in the beginning and 217.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,788 INFO L158 Benchmark]: Boogie Preprocessor took 15.98ms. Allocated memory is still 246.4MB. Free memory was 217.5MB in the beginning and 216.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,788 INFO L158 Benchmark]: RCFGBuilder took 274.96ms. Allocated memory is still 246.4MB. Free memory was 216.4MB in the beginning and 202.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,788 INFO L158 Benchmark]: TraceAbstraction took 864716.94ms. Allocated memory was 246.4MB in the beginning and 722.5MB in the end (delta: 476.1MB). Free memory was 202.3MB in the beginning and 276.4MB in the end (delta: -74.2MB). Peak memory consumption was 401.9MB. Max. memory is 8.0GB. [2022-02-15 11:50:37,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory was 156.1MB in the beginning and 156.0MB in the end (delta: 74.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.75ms. Allocated memory was 194.0MB in the beginning and 246.4MB in the end (delta: 52.4MB). Free memory was 139.5MB in the beginning and 219.0MB in the end (delta: -79.6MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.49ms. Allocated memory is still 246.4MB. Free memory was 219.0MB in the beginning and 217.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.98ms. Allocated memory is still 246.4MB. Free memory was 217.5MB in the beginning and 216.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 274.96ms. Allocated memory is still 246.4MB. Free memory was 216.4MB in the beginning and 202.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 864716.94ms. Allocated memory was 246.4MB in the beginning and 722.5MB in the end (delta: 476.1MB). Free memory was 202.3MB in the beginning and 276.4MB in the end (delta: -74.2MB). Peak memory consumption was 401.9MB. Max. memory is 8.0GB. * 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: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (69752states) and FLOYD_HOARE automaton (currently 31 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 73 for 0ms.. - TimeoutResultAtElement [Line: 94]: 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 (69752states) and FLOYD_HOARE automaton (currently 31 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 73 for 0ms.. - TimeoutResultAtElement [Line: 93]: 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 (69752states) and FLOYD_HOARE automaton (currently 31 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 73 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 864.6s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.6s, AutomataDifference: 757.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 15324 SdHoareTripleChecker+Valid, 76.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15324 mSDsluCounter, 42653 SdHoareTripleChecker+Invalid, 74.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4398 IncrementalHoareTripleChecker+Unchecked, 43496 mSDsCounter, 855 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13475 IncrementalHoareTripleChecker+Invalid, 18736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 855 mSolverCounterUnsat, 3585 mSDtfsCounter, 13475 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3528 GetRequests, 2645 SyntacticMatches, 37 SemanticMatches, 845 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45300 ImplicationChecksByTransitivity, 750.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69752occurred in iteration=20, InterpolantAutomatonStates: 643, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 143958 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 94.5s InterpolantComputationTime, 3304 NumberOfCodeBlocks, 3304 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 4627 ConstructedInterpolants, 139 QuantifiedInterpolants, 46533 SizeOfPredicates, 173 NumberOfNonLiveVariables, 2833 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 49 InterpolantComputations, 7 PerfectInterpolantSequences, 201/935 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