/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/bench-exp2x9.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 16:46:08,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 16:46:08,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 16:46:08,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-03 16:46:08,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-03 16:46:08,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-03 16:46:08,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-03 16:46:08,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-03 16:46:08,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-03 16:46:08,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-03 16:46:08,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-03 16:46:08,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-03 16:46:08,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 16:46:08,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 16:46:08,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 16:46:08,961 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 [2022-03-03 16:46:08,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 16:46:08,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 16:46:08,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 16:46:08,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 16:46:08,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 16:46:08,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 16:46:08,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 16:46:08,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 16:46:08,990 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 16:46:08,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 16:46:08,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 16:46:08,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 16:46:08,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 16:46:08,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 16:46:08,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 16:46:08,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 16:46:08,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 16:46:08,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 16:46:09,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 16:46:09,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 16:46:09,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 16:46:09,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 16:46:09,200 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 16:46:09,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-03-03 16:46:09,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b33c81d7f/ed53dc52b43949fa81b0097c89fe1f2a/FLAG08da08082 [2022-03-03 16:46:09,625 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 16:46:09,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-03-03 16:46:09,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b33c81d7f/ed53dc52b43949fa81b0097c89fe1f2a/FLAG08da08082 [2022-03-03 16:46:09,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b33c81d7f/ed53dc52b43949fa81b0097c89fe1f2a [2022-03-03 16:46:09,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 16:46:09,647 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 16:46:09,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 16:46:09,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 16:46:09,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 16:46:09,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8a2851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09, skipping insertion in model container [2022-03-03 16:46:09,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 16:46:09,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 16:46:09,872 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/bench-exp2x9.wvr.c[2669,2682] [2022-03-03 16:46:09,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 16:46:09,884 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 16:46:09,914 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/bench-exp2x9.wvr.c[2669,2682] [2022-03-03 16:46:09,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 16:46:09,924 INFO L208 MainTranslator]: Completed translation [2022-03-03 16:46:09,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09 WrapperNode [2022-03-03 16:46:09,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 16:46:09,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 16:46:09,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 16:46:09,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 16:46:09,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,964 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-03-03 16:46:09,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 16:46:09,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 16:46:09,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 16:46:09,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 16:46:09,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:09,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 16:46:09,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 16:46:09,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 16:46:09,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 16:46:10,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (1/1) ... [2022-03-03 16:46:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 16:46:10,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 16:46:10,030 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) [2022-03-03 16:46:10,048 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 [2022-03-03 16:46:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 16:46:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 16:46:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 16:46:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 16:46:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 16:46:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 16:46:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-03 16:46:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 16:46:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 16:46:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 16:46:10,072 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 16:46:10,163 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 16:46:10,164 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 16:46:10,391 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 16:46:10,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 16:46:10,398 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-03 16:46:10,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 04:46:10 BoogieIcfgContainer [2022-03-03 16:46:10,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 16:46:10,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 16:46:10,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 16:46:10,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 16:46:10,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 04:46:09" (1/3) ... [2022-03-03 16:46:10,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158c4b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:46:10, skipping insertion in model container [2022-03-03 16:46:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:46:09" (2/3) ... [2022-03-03 16:46:10,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158c4b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:46:10, skipping insertion in model container [2022-03-03 16:46:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 04:46:10" (3/3) ... [2022-03-03 16:46:10,405 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-03-03 16:46:10,408 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 16:46:10,408 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 16:46:10,408 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 16:46:10,408 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 16:46:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,461 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,461 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,461 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,461 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,462 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 16:46:10,465 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-03 16:46:10,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 16:46:10,498 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 16:46:10,498 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-03 16:46:10,508 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 149 transitions, 330 flow [2022-03-03 16:46:12,815 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 71783 states, 71782 states have (on average 4.936947981388092) internal successors, (354384), 71782 states have internal predecessors, (354384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 71783 states, 71782 states have (on average 4.936947981388092) internal successors, (354384), 71782 states have internal predecessors, (354384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-03 16:46:13,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:13,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:13,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash 727525, now seen corresponding path program 1 times [2022-03-03 16:46:13,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:13,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645432664] [2022-03-03 16:46:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:13,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:13,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:13,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645432664] [2022-03-03 16:46:13,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645432664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:13,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:13,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 16:46:13,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236839678] [2022-03-03 16:46:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:13,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 16:46:13,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:13,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 16:46:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 16:46:13,831 INFO L87 Difference]: Start difference. First operand has 71783 states, 71782 states have (on average 4.936947981388092) internal successors, (354384), 71782 states have internal predecessors, (354384), 0 states have call successors, (0), 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 46.0) internal successors, (92), 2 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) [2022-03-03 16:46:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:15,028 INFO L93 Difference]: Finished difference Result 71783 states and 329612 transitions. [2022-03-03 16:46:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 16:46:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 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 92 [2022-03-03 16:46:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:15,968 INFO L225 Difference]: With dead ends: 71783 [2022-03-03 16:46:15,968 INFO L226 Difference]: Without dead ends: 71781 [2022-03-03 16:46:15,970 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 [2022-03-03 16:46:15,972 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:15,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 16:46:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71781 states. [2022-03-03 16:46:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71781 to 71781. [2022-03-03 16:46:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71781 states, 71780 states have (on average 4.591947617720813) internal successors, (329610), 71780 states have internal predecessors, (329610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71781 states to 71781 states and 329610 transitions. [2022-03-03 16:46:20,151 INFO L78 Accepts]: Start accepts. Automaton has 71781 states and 329610 transitions. Word has length 92 [2022-03-03 16:46:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:20,153 INFO L470 AbstractCegarLoop]: Abstraction has 71781 states and 329610 transitions. [2022-03-03 16:46:20,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 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) [2022-03-03 16:46:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 71781 states and 329610 transitions. [2022-03-03 16:46:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-03 16:46:20,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:20,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:20,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 16:46:20,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2147208055, now seen corresponding path program 1 times [2022-03-03 16:46:20,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:20,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047252536] [2022-03-03 16:46:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:20,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:20,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047252536] [2022-03-03 16:46:20,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047252536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:20,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:20,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 16:46:20,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677629346] [2022-03-03 16:46:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:20,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 16:46:20,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 16:46:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 16:46:20,866 INFO L87 Difference]: Start difference. First operand 71781 states and 329610 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2022-03-03 16:46:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:21,991 INFO L93 Difference]: Finished difference Result 75682 states and 346756 transitions. [2022-03-03 16:46:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 16:46:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 92 [2022-03-03 16:46:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:22,527 INFO L225 Difference]: With dead ends: 75682 [2022-03-03 16:46:22,527 INFO L226 Difference]: Without dead ends: 75235 [2022-03-03 16:46:22,528 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 [2022-03-03 16:46:22,529 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 125 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:22,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 299 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 16:46:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75235 states. [2022-03-03 16:46:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75235 to 73120. [2022-03-03 16:46:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73120 states, 73119 states have (on average 4.585948932561988) internal successors, (335320), 73119 states have internal predecessors, (335320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73120 states to 73120 states and 335320 transitions. [2022-03-03 16:46:26,322 INFO L78 Accepts]: Start accepts. Automaton has 73120 states and 335320 transitions. Word has length 92 [2022-03-03 16:46:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:26,324 INFO L470 AbstractCegarLoop]: Abstraction has 73120 states and 335320 transitions. [2022-03-03 16:46:26,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2022-03-03 16:46:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 73120 states and 335320 transitions. [2022-03-03 16:46:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:46:26,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:26,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:26,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 16:46:26,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 60299954, now seen corresponding path program 1 times [2022-03-03 16:46:26,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:26,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720731540] [2022-03-03 16:46:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:26,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:26,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720731540] [2022-03-03 16:46:26,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720731540] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:26,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:26,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 16:46:26,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661284877] [2022-03-03 16:46:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 16:46:26,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 16:46:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 16:46:26,745 INFO L87 Difference]: Start difference. First operand 73120 states and 335320 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:28,081 INFO L93 Difference]: Finished difference Result 89774 states and 409076 transitions. [2022-03-03 16:46:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 16:46:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-03 16:46:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:28,629 INFO L225 Difference]: With dead ends: 89774 [2022-03-03 16:46:28,629 INFO L226 Difference]: Without dead ends: 89465 [2022-03-03 16:46:28,630 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 [2022-03-03 16:46:28,630 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 305 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 423 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 16:46:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89465 states. [2022-03-03 16:46:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89465 to 77798. [2022-03-03 16:46:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77798 states, 77797 states have (on average 4.573788192346749) internal successors, (355827), 77797 states have internal predecessors, (355827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77798 states to 77798 states and 355827 transitions. [2022-03-03 16:46:32,225 INFO L78 Accepts]: Start accepts. Automaton has 77798 states and 355827 transitions. Word has length 100 [2022-03-03 16:46:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:32,225 INFO L470 AbstractCegarLoop]: Abstraction has 77798 states and 355827 transitions. [2022-03-03 16:46:32,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 77798 states and 355827 transitions. [2022-03-03 16:46:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:46:32,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:32,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:32,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 16:46:32,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1550229488, now seen corresponding path program 1 times [2022-03-03 16:46:32,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:32,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477949218] [2022-03-03 16:46:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:33,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:33,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477949218] [2022-03-03 16:46:33,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477949218] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 16:46:33,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440118227] [2022-03-03 16:46:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:33,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 16:46:33,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 16:46:33,058 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) [2022-03-03 16:46:33,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 16:46:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:33,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 16:46:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 16:46:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:33,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 16:46:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:33,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440118227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 16:46:33,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 16:46:33,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-03-03 16:46:33,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137398905] [2022-03-03 16:46:33,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 16:46:33,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 16:46:33,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 16:46:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-03 16:46:33,917 INFO L87 Difference]: Start difference. First operand 77798 states and 355827 transitions. Second operand has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:36,096 INFO L93 Difference]: Finished difference Result 119847 states and 542992 transitions. [2022-03-03 16:46:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 16:46:36,097 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 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 100 [2022-03-03 16:46:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:37,102 INFO L225 Difference]: With dead ends: 119847 [2022-03-03 16:46:37,103 INFO L226 Difference]: Without dead ends: 119847 [2022-03-03 16:46:37,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-03-03 16:46:37,106 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 761 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:37,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 1016 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 16:46:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119847 states. [2022-03-03 16:46:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119847 to 84041. [2022-03-03 16:46:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84041 states, 84040 states have (on average 4.582496430271299) internal successors, (385113), 84040 states have internal predecessors, (385113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84041 states to 84041 states and 385113 transitions. [2022-03-03 16:46:41,089 INFO L78 Accepts]: Start accepts. Automaton has 84041 states and 385113 transitions. Word has length 100 [2022-03-03 16:46:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:41,089 INFO L470 AbstractCegarLoop]: Abstraction has 84041 states and 385113 transitions. [2022-03-03 16:46:41,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 84041 states and 385113 transitions. [2022-03-03 16:46:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:46:41,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:41,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:41,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 16:46:41,915 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 [2022-03-03 16:46:41,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 356984644, now seen corresponding path program 2 times [2022-03-03 16:46:41,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:41,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468014127] [2022-03-03 16:46:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:42,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:42,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468014127] [2022-03-03 16:46:42,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468014127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:42,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:42,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 16:46:42,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478033682] [2022-03-03 16:46:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:42,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 16:46:42,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 16:46:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 16:46:42,058 INFO L87 Difference]: Start difference. First operand 84041 states and 385113 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:43,168 INFO L93 Difference]: Finished difference Result 93628 states and 425130 transitions. [2022-03-03 16:46:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 16:46:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-03 16:46:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:44,214 INFO L225 Difference]: With dead ends: 93628 [2022-03-03 16:46:44,214 INFO L226 Difference]: Without dead ends: 93484 [2022-03-03 16:46:44,214 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 [2022-03-03 16:46:44,217 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 346 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:44,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 405 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 16:46:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93484 states. [2022-03-03 16:46:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93484 to 85457. [2022-03-03 16:46:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85457 states, 85456 states have (on average 4.5774667665231235) internal successors, (391172), 85456 states have internal predecessors, (391172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85457 states to 85457 states and 391172 transitions. [2022-03-03 16:46:48,171 INFO L78 Accepts]: Start accepts. Automaton has 85457 states and 391172 transitions. Word has length 100 [2022-03-03 16:46:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:48,172 INFO L470 AbstractCegarLoop]: Abstraction has 85457 states and 391172 transitions. [2022-03-03 16:46:48,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 85457 states and 391172 transitions. [2022-03-03 16:46:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:46:48,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:48,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:48,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 16:46:48,433 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -978377090, now seen corresponding path program 2 times [2022-03-03 16:46:48,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:48,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390444058] [2022-03-03 16:46:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:48,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:48,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390444058] [2022-03-03 16:46:48,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390444058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:48,615 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:48,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 16:46:48,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971483745] [2022-03-03 16:46:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:48,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 16:46:48,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 16:46:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 16:46:48,616 INFO L87 Difference]: Start difference. First operand 85457 states and 391172 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:49,957 INFO L93 Difference]: Finished difference Result 93101 states and 426416 transitions. [2022-03-03 16:46:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 16:46:49,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-03 16:46:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:50,459 INFO L225 Difference]: With dead ends: 93101 [2022-03-03 16:46:50,460 INFO L226 Difference]: Without dead ends: 93101 [2022-03-03 16:46:50,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 16:46:50,460 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 187 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:50,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 416 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 16:46:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93101 states. [2022-03-03 16:46:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93101 to 91330. [2022-03-03 16:46:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91330 states, 91329 states have (on average 4.584710223477757) internal successors, (418717), 91329 states have internal predecessors, (418717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91330 states to 91330 states and 418717 transitions. [2022-03-03 16:46:54,020 INFO L78 Accepts]: Start accepts. Automaton has 91330 states and 418717 transitions. Word has length 100 [2022-03-03 16:46:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:46:54,020 INFO L470 AbstractCegarLoop]: Abstraction has 91330 states and 418717 transitions. [2022-03-03 16:46:54,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 91330 states and 418717 transitions. [2022-03-03 16:46:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:46:54,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:46:54,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:46:54,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 16:46:54,623 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:46:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:46:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash 157553520, now seen corresponding path program 1 times [2022-03-03 16:46:54,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:46:54,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105185050] [2022-03-03 16:46:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:46:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:46:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:46:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:46:54,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:46:54,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105185050] [2022-03-03 16:46:54,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105185050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:46:54,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:46:54,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 16:46:54,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944040929] [2022-03-03 16:46:54,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:46:54,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 16:46:54,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:46:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 16:46:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 16:46:54,796 INFO L87 Difference]: Start difference. First operand 91330 states and 418717 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:46:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:46:55,846 INFO L93 Difference]: Finished difference Result 92581 states and 423247 transitions. [2022-03-03 16:46:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 16:46:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-03 16:46:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:46:56,611 INFO L225 Difference]: With dead ends: 92581 [2022-03-03 16:46:56,611 INFO L226 Difference]: Without dead ends: 92068 [2022-03-03 16:46:56,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-03 16:46:56,612 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 159 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 16:46:56,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 272 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 16:46:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92068 states. [2022-03-03 16:46:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92068 to 90952. [2022-03-03 16:46:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90952 states, 90951 states have (on average 4.585557058196172) internal successors, (417061), 90951 states have internal predecessors, (417061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90952 states to 90952 states and 417061 transitions. [2022-03-03 16:47:00,129 INFO L78 Accepts]: Start accepts. Automaton has 90952 states and 417061 transitions. Word has length 100 [2022-03-03 16:47:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:47:00,129 INFO L470 AbstractCegarLoop]: Abstraction has 90952 states and 417061 transitions. [2022-03-03 16:47:00,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 90952 states and 417061 transitions. [2022-03-03 16:47:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:47:00,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:47:00,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:47:00,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 16:47:00,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:47:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:47:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2055982674, now seen corresponding path program 1 times [2022-03-03 16:47:00,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:47:00,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628510273] [2022-03-03 16:47:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:47:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:47:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:47:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:47:00,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:47:00,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628510273] [2022-03-03 16:47:00,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628510273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 16:47:00,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148690303] [2022-03-03 16:47:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:47:00,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 16:47:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 16:47:00,502 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) [2022-03-03 16:47:00,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 16:47:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:47:00,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 16:47:00,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 16:47:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:47:00,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 16:47:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:47:01,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148690303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 16:47:01,255 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 16:47:01,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-03 16:47:01,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742459135] [2022-03-03 16:47:01,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 16:47:01,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 16:47:01,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:47:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 16:47:01,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 16:47:01,257 INFO L87 Difference]: Start difference. First operand 90952 states and 417061 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:47:03,194 INFO L93 Difference]: Finished difference Result 151222 states and 683659 transitions. [2022-03-03 16:47:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 16:47:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 100 [2022-03-03 16:47:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:47:04,811 INFO L225 Difference]: With dead ends: 151222 [2022-03-03 16:47:04,811 INFO L226 Difference]: Without dead ends: 151222 [2022-03-03 16:47:04,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-03-03 16:47:04,814 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 942 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 16:47:04,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 748 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 16:47:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151222 states. [2022-03-03 16:47:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151222 to 100324. [2022-03-03 16:47:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100324 states, 100323 states have (on average 4.6004605125444815) internal successors, (461532), 100323 states have internal predecessors, (461532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100324 states to 100324 states and 461532 transitions. [2022-03-03 16:47:10,156 INFO L78 Accepts]: Start accepts. Automaton has 100324 states and 461532 transitions. Word has length 100 [2022-03-03 16:47:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:47:10,156 INFO L470 AbstractCegarLoop]: Abstraction has 100324 states and 461532 transitions. [2022-03-03 16:47:10,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 100324 states and 461532 transitions. [2022-03-03 16:47:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 16:47:10,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:47:10,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:47:10,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 16:47:11,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-03-03 16:47:11,019 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:47:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:47:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2007330100, now seen corresponding path program 2 times [2022-03-03 16:47:11,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:47:11,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649968584] [2022-03-03 16:47:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:47:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:47:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:47:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:47:11,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:47:11,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649968584] [2022-03-03 16:47:11,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649968584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 16:47:11,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 16:47:11,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 16:47:11,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893714653] [2022-03-03 16:47:11,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 16:47:11,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 16:47:11,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 16:47:11,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 16:47:11,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 16:47:11,105 INFO L87 Difference]: Start difference. First operand 100324 states and 461532 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 16:47:12,943 INFO L93 Difference]: Finished difference Result 151834 states and 685887 transitions. [2022-03-03 16:47:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 16:47:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-03 16:47:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 16:47:14,148 INFO L225 Difference]: With dead ends: 151834 [2022-03-03 16:47:14,148 INFO L226 Difference]: Without dead ends: 151834 [2022-03-03 16:47:14,149 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 [2022-03-03 16:47:14,150 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 331 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 16:47:14,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 499 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 16:47:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151834 states. [2022-03-03 16:47:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151834 to 107344. [2022-03-03 16:47:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107344 states, 107343 states have (on average 4.602964329299535) internal successors, (494096), 107343 states have internal predecessors, (494096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107344 states to 107344 states and 494096 transitions. [2022-03-03 16:47:19,229 INFO L78 Accepts]: Start accepts. Automaton has 107344 states and 494096 transitions. Word has length 100 [2022-03-03 16:47:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 16:47:19,229 INFO L470 AbstractCegarLoop]: Abstraction has 107344 states and 494096 transitions. [2022-03-03 16:47:19,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 16:47:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 107344 states and 494096 transitions. [2022-03-03 16:47:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 16:47:19,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 16:47:19,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 16:47:19,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 16:47:19,583 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 16:47:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 16:47:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1773705685, now seen corresponding path program 1 times [2022-03-03 16:47:19,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 16:47:19,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821253604] [2022-03-03 16:47:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:47:19,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 16:47:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:47:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 16:47:39,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 16:47:39,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821253604] [2022-03-03 16:47:39,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821253604] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 16:47:39,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717346568] [2022-03-03 16:47:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 16:47:39,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 16:47:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 16:47:39,178 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) [2022-03-03 16:47:39,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 16:47:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 16:47:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 16:47:39,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 16:54:10,180 WARN L228 SmtUtils]: Spent 8.76s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)