/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:17:16,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:17:16,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:17:17,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 02:17:17,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 02:17:17,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 02:17:17,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 02:17:17,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 02:17:17,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 02:17:17,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 02:17:17,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 02:17:17,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 02:17:17,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 02:17:17,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 02:17:17,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 02:17:17,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 02:17:17,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 02:17:17,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 02:17:17,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 02:17:17,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 02:17:17,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 02:17:17,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 02:17:17,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 02:17:17,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 02:17:17,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 02:17:17,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:17:17,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:17:17,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:17:17,085 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 [2022-01-18 02:17:17,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:17:17,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:17:17,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:17:17,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:17:17,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:17:17,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:17:17,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:17:17,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:17:17,113 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:17:17,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:17:17,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:17:17,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:17:17,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:17:17,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:17:17,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:17:17,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:17:17,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:17:17,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:17:17,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:17:17,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:17:17,354 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:17:17,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 02:17:17,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa02668fb/ef096b548ace402384e1320bdba72ef4/FLAGf7df9a8c1 [2022-01-18 02:17:17,753 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:17:17,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 02:17:17,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa02668fb/ef096b548ace402384e1320bdba72ef4/FLAGf7df9a8c1 [2022-01-18 02:17:17,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa02668fb/ef096b548ace402384e1320bdba72ef4 [2022-01-18 02:17:17,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:17:17,768 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:17:17,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:17:17,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:17:17,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:17:17,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:17,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a881d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17, skipping insertion in model container [2022-01-18 02:17:17,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:17,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:17:17,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:17:17,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-01-18 02:17:17,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:17:17,942 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:17:17,953 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-01-18 02:17:17,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:17:17,962 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:17:17,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17 WrapperNode [2022-01-18 02:17:17,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:17:17,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:17:17,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:17:17,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:17:17,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:17,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:17,986 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-01-18 02:17:17,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:17:17,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:17:17,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:17:17,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:17:17,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:17,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:17:18,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:17:18,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:17:18,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:17:18,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (1/1) ... [2022-01-18 02:17:18,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:17:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:18,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 02:17:18,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 02:17:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:17:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:17:18,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:17:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:17:18,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:17:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:17:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:17:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:17:18,082 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:17:18,144 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:17:18,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:17:18,264 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:17:18,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:17:18,306 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 02:17:18,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:17:18 BoogieIcfgContainer [2022-01-18 02:17:18,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:17:18,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:17:18,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:17:18,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:17:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:17:17" (1/3) ... [2022-01-18 02:17:18,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f36c688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:17:18, skipping insertion in model container [2022-01-18 02:17:18,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:17:17" (2/3) ... [2022-01-18 02:17:18,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f36c688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:17:18, skipping insertion in model container [2022-01-18 02:17:18,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:17:18" (3/3) ... [2022-01-18 02:17:18,314 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-01-18 02:17:18,317 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:17:18,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:17:18,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:17:18,317 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:17:18,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,344 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,345 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,345 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,345 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,346 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,346 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,347 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,348 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,350 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,355 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,355 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,355 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:17:18,358 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:17:18,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:17:18,399 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 02:17:18,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:17:18,407 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-01-18 02:17:18,449 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 02:17:18,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:18,467 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] [2022-01-18 02:17:18,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1161800666, now seen corresponding path program 1 times [2022-01-18 02:17:18,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622909994] [2022-01-18 02:17:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:18,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:18,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:18,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622909994] [2022-01-18 02:17:18,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622909994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:18,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:18,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:17:18,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776596657] [2022-01-18 02:17:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:18,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:17:18,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:17:18,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:17:18,644 INFO L87 Difference]: Start difference. First operand has 330 states, 329 states have (on average 2.5866261398176293) internal successors, (851), 329 states have internal predecessors, (851), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:18,684 INFO L93 Difference]: Finished difference Result 330 states and 780 transitions. [2022-01-18 02:17:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:17:18,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-18 02:17:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:18,696 INFO L225 Difference]: With dead ends: 330 [2022-01-18 02:17:18,696 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 02:17:18,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:17:18,699 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:18,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 02:17:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-01-18 02:17:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.379204892966361) internal successors, (778), 327 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 778 transitions. [2022-01-18 02:17:18,750 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 778 transitions. Word has length 60 [2022-01-18 02:17:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:18,750 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 778 transitions. [2022-01-18 02:17:18,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 778 transitions. [2022-01-18 02:17:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 02:17:18,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:18,753 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] [2022-01-18 02:17:18,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:17:18,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash 651266489, now seen corresponding path program 1 times [2022-01-18 02:17:18,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:18,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624211247] [2022-01-18 02:17:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:18,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:18,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624211247] [2022-01-18 02:17:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624211247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:18,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:18,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:17:18,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759855207] [2022-01-18 02:17:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:18,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:17:18,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:17:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:17:18,882 INFO L87 Difference]: Start difference. First operand 328 states and 778 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:18,955 INFO L93 Difference]: Finished difference Result 502 states and 1210 transitions. [2022-01-18 02:17:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:17:18,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-18 02:17:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:18,958 INFO L225 Difference]: With dead ends: 502 [2022-01-18 02:17:18,958 INFO L226 Difference]: Without dead ends: 388 [2022-01-18 02:17:18,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:17:18,959 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:18,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:18,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-18 02:17:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358. [2022-01-18 02:17:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.3977591036414565) internal successors, (856), 357 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 856 transitions. [2022-01-18 02:17:18,975 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 856 transitions. Word has length 60 [2022-01-18 02:17:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:18,975 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 856 transitions. [2022-01-18 02:17:18,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 856 transitions. [2022-01-18 02:17:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:17:18,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:18,980 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] [2022-01-18 02:17:18,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:17:18,981 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash -72683847, now seen corresponding path program 1 times [2022-01-18 02:17:18,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:18,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910640372] [2022-01-18 02:17:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:18,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:19,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910640372] [2022-01-18 02:17:19,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910640372] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:19,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202985726] [2022-01-18 02:17:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:19,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:19,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:19,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:17:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:19,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 02:17:19,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:19,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:19,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202985726] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:19,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 02:17:19,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-01-18 02:17:19,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118803526] [2022-01-18 02:17:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:19,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 02:17:19,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 02:17:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:17:19,640 INFO L87 Difference]: Start difference. First operand 358 states and 856 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:19,676 INFO L93 Difference]: Finished difference Result 425 states and 1038 transitions. [2022-01-18 02:17:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 02:17:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 02:17:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:19,680 INFO L225 Difference]: With dead ends: 425 [2022-01-18 02:17:19,680 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 02:17:19,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:17:19,683 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 34 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:19,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 188 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 02:17:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-01-18 02:17:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.423469387755102) internal successors, (950), 392 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 950 transitions. [2022-01-18 02:17:19,713 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 950 transitions. Word has length 65 [2022-01-18 02:17:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:19,713 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 950 transitions. [2022-01-18 02:17:19,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 950 transitions. [2022-01-18 02:17:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:17:19,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:19,715 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] [2022-01-18 02:17:19,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:19,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:19,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2097537209, now seen corresponding path program 2 times [2022-01-18 02:17:19,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:19,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958704474] [2022-01-18 02:17:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:19,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:19,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:19,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958704474] [2022-01-18 02:17:19,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958704474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:19,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:19,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 02:17:19,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086735136] [2022-01-18 02:17:19,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:19,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 02:17:19,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 02:17:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 02:17:19,994 INFO L87 Difference]: Start difference. First operand 393 states and 950 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:20,022 INFO L93 Difference]: Finished difference Result 652 states and 1598 transitions. [2022-01-18 02:17:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 02:17:20,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 02:17:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:20,027 INFO L225 Difference]: With dead ends: 652 [2022-01-18 02:17:20,027 INFO L226 Difference]: Without dead ends: 652 [2022-01-18 02:17:20,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 02:17:20,034 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 36 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:20,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 213 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-01-18 02:17:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 401. [2022-01-18 02:17:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.45) internal successors, (980), 400 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 980 transitions. [2022-01-18 02:17:20,051 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 980 transitions. Word has length 65 [2022-01-18 02:17:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:20,053 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 980 transitions. [2022-01-18 02:17:20,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 980 transitions. [2022-01-18 02:17:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:17:20,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:20,057 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] [2022-01-18 02:17:20,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 02:17:20,057 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -282039363, now seen corresponding path program 3 times [2022-01-18 02:17:20,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244553523] [2022-01-18 02:17:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:20,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:20,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:20,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244553523] [2022-01-18 02:17:20,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244553523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:20,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:20,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:17:20,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769471597] [2022-01-18 02:17:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:20,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:17:20,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:17:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:17:20,134 INFO L87 Difference]: Start difference. First operand 401 states and 980 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:20,185 INFO L93 Difference]: Finished difference Result 547 states and 1356 transitions. [2022-01-18 02:17:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:17:20,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 02:17:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:20,188 INFO L225 Difference]: With dead ends: 547 [2022-01-18 02:17:20,188 INFO L226 Difference]: Without dead ends: 535 [2022-01-18 02:17:20,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:17:20,191 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 26 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:20,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 267 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-18 02:17:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 405. [2022-01-18 02:17:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 2.452970297029703) internal successors, (991), 404 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 991 transitions. [2022-01-18 02:17:20,202 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 991 transitions. Word has length 65 [2022-01-18 02:17:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:20,203 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 991 transitions. [2022-01-18 02:17:20,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 991 transitions. [2022-01-18 02:17:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:17:20,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:20,205 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] [2022-01-18 02:17:20,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 02:17:20,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2018243491, now seen corresponding path program 4 times [2022-01-18 02:17:20,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211367834] [2022-01-18 02:17:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:20,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:20,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211367834] [2022-01-18 02:17:20,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211367834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:20,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:20,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 02:17:20,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885734234] [2022-01-18 02:17:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 02:17:20,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 02:17:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 02:17:20,261 INFO L87 Difference]: Start difference. First operand 405 states and 991 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:20,288 INFO L93 Difference]: Finished difference Result 472 states and 1153 transitions. [2022-01-18 02:17:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:17:20,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-18 02:17:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:20,291 INFO L225 Difference]: With dead ends: 472 [2022-01-18 02:17:20,291 INFO L226 Difference]: Without dead ends: 448 [2022-01-18 02:17:20,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:17:20,292 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:20,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:17:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-18 02:17:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 401. [2022-01-18 02:17:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.43) internal successors, (972), 400 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 972 transitions. [2022-01-18 02:17:20,302 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 972 transitions. Word has length 65 [2022-01-18 02:17:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:20,303 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 972 transitions. [2022-01-18 02:17:20,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 972 transitions. [2022-01-18 02:17:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 02:17:20,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:20,304 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] [2022-01-18 02:17:20,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 02:17:20,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1804809499, now seen corresponding path program 1 times [2022-01-18 02:17:20,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:20,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031248600] [2022-01-18 02:17:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:20,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:20,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031248600] [2022-01-18 02:17:20,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031248600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198881634] [2022-01-18 02:17:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:20,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:20,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:20,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:20,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:17:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:20,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:17:20,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:20,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:21,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198881634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:21,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:21,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 20 [2022-01-18 02:17:21,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273058373] [2022-01-18 02:17:21,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:21,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:17:21,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:17:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:17:21,398 INFO L87 Difference]: Start difference. First operand 401 states and 972 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:22,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:22,474 INFO L93 Difference]: Finished difference Result 2227 states and 5706 transitions. [2022-01-18 02:17:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:17:22,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 02:17:22,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:22,483 INFO L225 Difference]: With dead ends: 2227 [2022-01-18 02:17:22,483 INFO L226 Difference]: Without dead ends: 1957 [2022-01-18 02:17:22,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=456, Invalid=1266, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:17:22,485 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 587 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:22,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1337 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:17:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-01-18 02:17:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 702. [2022-01-18 02:17:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.637660485021398) internal successors, (1849), 701 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1849 transitions. [2022-01-18 02:17:22,509 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1849 transitions. Word has length 67 [2022-01-18 02:17:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1849 transitions. [2022-01-18 02:17:22,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1849 transitions. [2022-01-18 02:17:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 02:17:22,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:22,512 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] [2022-01-18 02:17:22,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:22,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-18 02:17:22,731 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173441, now seen corresponding path program 2 times [2022-01-18 02:17:22,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:22,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482630164] [2022-01-18 02:17:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:22,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:22,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482630164] [2022-01-18 02:17:22,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482630164] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801189593] [2022-01-18 02:17:22,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:17:22,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:22,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:22,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:17:22,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:17:22,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:22,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 02:17:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:23,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:23,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801189593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:23,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:23,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-01-18 02:17:23,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031996918] [2022-01-18 02:17:23,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:23,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 02:17:23,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 02:17:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:17:23,302 INFO L87 Difference]: Start difference. First operand 702 states and 1849 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:23,458 INFO L93 Difference]: Finished difference Result 917 states and 2371 transitions. [2022-01-18 02:17:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 02:17:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 02:17:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:23,462 INFO L225 Difference]: With dead ends: 917 [2022-01-18 02:17:23,462 INFO L226 Difference]: Without dead ends: 887 [2022-01-18 02:17:23,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-18 02:17:23,462 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 77 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:23,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 613 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:17:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-01-18 02:17:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2022-01-18 02:17:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.587227414330218) internal successors, (1661), 642 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1661 transitions. [2022-01-18 02:17:23,476 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1661 transitions. Word has length 67 [2022-01-18 02:17:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:23,476 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1661 transitions. [2022-01-18 02:17:23,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1661 transitions. [2022-01-18 02:17:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:17:23,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:23,478 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:23,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:23,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:23,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash -145870821, now seen corresponding path program 3 times [2022-01-18 02:17:23,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:23,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390428176] [2022-01-18 02:17:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:23,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390428176] [2022-01-18 02:17:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390428176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:23,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424440743] [2022-01-18 02:17:23,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:17:23,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:23,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:23,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:17:23,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:17:23,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:23,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:17:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:24,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:24,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424440743] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:24,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:24,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-01-18 02:17:24,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949652491] [2022-01-18 02:17:24,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:24,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:17:24,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:17:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:17:24,246 INFO L87 Difference]: Start difference. First operand 643 states and 1661 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:25,732 INFO L93 Difference]: Finished difference Result 1292 states and 3392 transitions. [2022-01-18 02:17:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:17:25,733 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:17:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:25,737 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 02:17:25,737 INFO L226 Difference]: Without dead ends: 1292 [2022-01-18 02:17:25,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=693, Invalid=3339, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:17:25,739 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 496 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:25,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1822 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:17:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-01-18 02:17:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 726. [2022-01-18 02:17:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 2.613793103448276) internal successors, (1895), 725 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1895 transitions. [2022-01-18 02:17:25,755 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1895 transitions. Word has length 72 [2022-01-18 02:17:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:25,755 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 1895 transitions. [2022-01-18 02:17:25,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1895 transitions. [2022-01-18 02:17:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:17:25,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:25,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:25,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:25,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:25,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1917541861, now seen corresponding path program 4 times [2022-01-18 02:17:25,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048560249] [2022-01-18 02:17:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:25,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:26,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:26,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048560249] [2022-01-18 02:17:26,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048560249] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:26,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377210030] [2022-01-18 02:17:26,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:17:26,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:26,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:26,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:17:26,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:17:26,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:17:26,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:26,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:26,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377210030] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:26,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:26,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 02:17:26,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722491076] [2022-01-18 02:17:26,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:26,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:17:26,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:26,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:17:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:17:26,869 INFO L87 Difference]: Start difference. First operand 726 states and 1895 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:29,384 INFO L93 Difference]: Finished difference Result 2666 states and 6740 transitions. [2022-01-18 02:17:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 02:17:29,384 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:17:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:29,393 INFO L225 Difference]: With dead ends: 2666 [2022-01-18 02:17:29,394 INFO L226 Difference]: Without dead ends: 2666 [2022-01-18 02:17:29,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1167, Invalid=4089, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:17:29,395 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 667 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:29,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1362 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:17:29,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-01-18 02:17:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 742. [2022-01-18 02:17:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.6167341430499325) internal successors, (1939), 741 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1939 transitions. [2022-01-18 02:17:29,420 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1939 transitions. Word has length 72 [2022-01-18 02:17:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:29,421 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1939 transitions. [2022-01-18 02:17:29,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:17:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1939 transitions. [2022-01-18 02:17:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:17:29,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:29,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:29,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:29,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 02:17:29,639 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -899018853, now seen corresponding path program 5 times [2022-01-18 02:17:29,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343501113] [2022-01-18 02:17:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:29,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:29,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343501113] [2022-01-18 02:17:29,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343501113] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276551761] [2022-01-18 02:17:29,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:17:29,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:29,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:29,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:17:29,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:17:29,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:29,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:17:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:30,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:11,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276551761] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:11,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:11,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 02:18:11,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61006831] [2022-01-18 02:18:11,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:11,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:18:11,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:18:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:18:11,782 INFO L87 Difference]: Start difference. First operand 742 states and 1939 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:17,839 INFO L93 Difference]: Finished difference Result 1870 states and 4875 transitions. [2022-01-18 02:18:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:18:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:17,846 INFO L225 Difference]: With dead ends: 1870 [2022-01-18 02:18:17,846 INFO L226 Difference]: Without dead ends: 1870 [2022-01-18 02:18:17,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1326, Invalid=5480, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 02:18:17,848 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 617 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:17,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1545 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:18:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-01-18 02:18:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 750. [2022-01-18 02:18:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.628838451268358) internal successors, (1969), 749 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1969 transitions. [2022-01-18 02:18:17,865 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1969 transitions. Word has length 72 [2022-01-18 02:18:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1969 transitions. [2022-01-18 02:18:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1969 transitions. [2022-01-18 02:18:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:17,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:17,867 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:17,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 02:18:18,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:18,082 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1016371871, now seen corresponding path program 6 times [2022-01-18 02:18:18,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:18,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123030117] [2022-01-18 02:18:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:18,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:18,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123030117] [2022-01-18 02:18:18,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123030117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151099090] [2022-01-18 02:18:18,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:18:18,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:18,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:18,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:18,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:18:18,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:18:18,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:18,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:18,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151099090] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:18,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:18,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 02:18:18,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666406886] [2022-01-18 02:18:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:18,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:18:18,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:18,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:18:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:18:18,967 INFO L87 Difference]: Start difference. First operand 750 states and 1969 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:19,955 INFO L93 Difference]: Finished difference Result 1648 states and 4295 transitions. [2022-01-18 02:18:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:18:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:19,960 INFO L225 Difference]: With dead ends: 1648 [2022-01-18 02:18:19,960 INFO L226 Difference]: Without dead ends: 1624 [2022-01-18 02:18:19,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:18:19,961 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 515 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:19,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1322 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:18:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-01-18 02:18:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 942. [2022-01-18 02:18:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.6790648246546227) internal successors, (2521), 941 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2521 transitions. [2022-01-18 02:18:19,979 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2521 transitions. Word has length 72 [2022-01-18 02:18:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:19,980 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2521 transitions. [2022-01-18 02:18:19,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2521 transitions. [2022-01-18 02:18:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:19,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:19,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:20,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 02:18:20,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:20,195 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1259204635, now seen corresponding path program 7 times [2022-01-18 02:18:20,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290585208] [2022-01-18 02:18:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:20,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:20,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:20,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290585208] [2022-01-18 02:18:20,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290585208] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:20,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867041242] [2022-01-18 02:18:20,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:18:20,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:20,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:20,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:18:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:20,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:18:20,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:20,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:20,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867041242] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:20,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:20,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2022-01-18 02:18:20,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614254261] [2022-01-18 02:18:20,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:20,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:18:20,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:18:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:18:20,848 INFO L87 Difference]: Start difference. First operand 942 states and 2521 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:22,551 INFO L93 Difference]: Finished difference Result 1966 states and 5300 transitions. [2022-01-18 02:18:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 02:18:22,552 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:22,558 INFO L225 Difference]: With dead ends: 1966 [2022-01-18 02:18:22,558 INFO L226 Difference]: Without dead ends: 1966 [2022-01-18 02:18:22,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:18:22,560 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 401 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:22,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1741 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:18:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-01-18 02:18:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 966. [2022-01-18 02:18:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.6808290155440413) internal successors, (2587), 965 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2587 transitions. [2022-01-18 02:18:22,580 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2587 transitions. Word has length 72 [2022-01-18 02:18:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:22,580 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 2587 transitions. [2022-01-18 02:18:22,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2587 transitions. [2022-01-18 02:18:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:22,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:22,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:22,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 02:18:22,795 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2017239653, now seen corresponding path program 8 times [2022-01-18 02:18:22,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747098816] [2022-01-18 02:18:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:22,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:22,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:22,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747098816] [2022-01-18 02:18:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747098816] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238566926] [2022-01-18 02:18:22,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:18:22,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:22,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:22,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:18:23,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:18:23,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:23,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:23,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:23,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:23,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238566926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:23,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:23,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 02:18:23,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548527106] [2022-01-18 02:18:23,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:23,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:18:23,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:18:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:18:23,729 INFO L87 Difference]: Start difference. First operand 966 states and 2587 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:25,608 INFO L93 Difference]: Finished difference Result 2692 states and 7113 transitions. [2022-01-18 02:18:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:18:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:25,617 INFO L225 Difference]: With dead ends: 2692 [2022-01-18 02:18:25,617 INFO L226 Difference]: Without dead ends: 2692 [2022-01-18 02:18:25,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=670, Invalid=2636, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 02:18:25,618 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 415 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:25,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1882 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:18:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-01-18 02:18:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1086. [2022-01-18 02:18:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.7253456221198156) internal successors, (2957), 1085 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2957 transitions. [2022-01-18 02:18:25,642 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2957 transitions. Word has length 72 [2022-01-18 02:18:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:25,642 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2957 transitions. [2022-01-18 02:18:25,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2957 transitions. [2022-01-18 02:18:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:25,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:25,644 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:25,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:25,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 02:18:25,859 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1902016859, now seen corresponding path program 9 times [2022-01-18 02:18:25,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469747578] [2022-01-18 02:18:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:25,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:26,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:26,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469747578] [2022-01-18 02:18:26,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469747578] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:26,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742138944] [2022-01-18 02:18:26,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:18:26,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:26,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:26,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:26,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:18:26,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:18:26,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:26,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:26,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:26,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:26,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742138944] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:26,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:26,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 02:18:26,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118317402] [2022-01-18 02:18:26,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:26,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:18:26,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:18:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:18:26,770 INFO L87 Difference]: Start difference. First operand 1086 states and 2957 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:28,221 INFO L93 Difference]: Finished difference Result 2686 states and 7052 transitions. [2022-01-18 02:18:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:18:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:28,230 INFO L225 Difference]: With dead ends: 2686 [2022-01-18 02:18:28,230 INFO L226 Difference]: Without dead ends: 2686 [2022-01-18 02:18:28,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=803, Invalid=2737, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:18:28,231 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 480 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1431 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:18:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-18 02:18:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1170. [2022-01-18 02:18:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.740804106073567) internal successors, (3204), 1169 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 3204 transitions. [2022-01-18 02:18:28,273 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 3204 transitions. Word has length 72 [2022-01-18 02:18:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:28,273 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 3204 transitions. [2022-01-18 02:18:28,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 3204 transitions. [2022-01-18 02:18:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:28,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:28,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:28,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:28,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 02:18:28,491 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -477559713, now seen corresponding path program 10 times [2022-01-18 02:18:28,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:28,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260828344] [2022-01-18 02:18:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:28,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:28,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260828344] [2022-01-18 02:18:28,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260828344] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192403917] [2022-01-18 02:18:28,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:18:28,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:28,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:28,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:28,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:18:28,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:18:28,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:28,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:28,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:28,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192403917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:29,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:29,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-01-18 02:18:29,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754223298] [2022-01-18 02:18:29,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:29,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 02:18:29,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:29,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 02:18:29,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 02:18:29,380 INFO L87 Difference]: Start difference. First operand 1170 states and 3204 transitions. Second operand has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:31,081 INFO L93 Difference]: Finished difference Result 2418 states and 6569 transitions. [2022-01-18 02:18:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:18:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:31,086 INFO L225 Difference]: With dead ends: 2418 [2022-01-18 02:18:31,087 INFO L226 Difference]: Without dead ends: 2370 [2022-01-18 02:18:31,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=866, Invalid=3424, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:18:31,088 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 433 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:31,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1343 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:18:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-01-18 02:18:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1226. [2022-01-18 02:18:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.7542857142857144) internal successors, (3374), 1225 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3374 transitions. [2022-01-18 02:18:31,111 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3374 transitions. Word has length 72 [2022-01-18 02:18:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:31,111 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3374 transitions. [2022-01-18 02:18:31,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3374 transitions. [2022-01-18 02:18:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:31,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:31,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:31,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:31,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 02:18:31,329 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1924749117, now seen corresponding path program 11 times [2022-01-18 02:18:31,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:31,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969820442] [2022-01-18 02:18:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:31,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:31,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969820442] [2022-01-18 02:18:31,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969820442] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7431755] [2022-01-18 02:18:31,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:18:31,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:31,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:31,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:31,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:18:31,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:18:31,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:31,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:18:31,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:31,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:32,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7431755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:32,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:32,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2022-01-18 02:18:32,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38513058] [2022-01-18 02:18:32,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:32,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:18:32,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:18:32,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:18:32,112 INFO L87 Difference]: Start difference. First operand 1226 states and 3374 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:33,191 INFO L93 Difference]: Finished difference Result 1817 states and 4883 transitions. [2022-01-18 02:18:33,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:18:33,192 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:33,196 INFO L225 Difference]: With dead ends: 1817 [2022-01-18 02:18:33,196 INFO L226 Difference]: Without dead ends: 1781 [2022-01-18 02:18:33,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 02:18:33,197 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 430 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:33,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1386 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:18:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-18 02:18:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1226. [2022-01-18 02:18:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.7510204081632654) internal successors, (3370), 1225 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3370 transitions. [2022-01-18 02:18:33,215 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3370 transitions. Word has length 72 [2022-01-18 02:18:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:33,215 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3370 transitions. [2022-01-18 02:18:33,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3370 transitions. [2022-01-18 02:18:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:33,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:33,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:33,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:33,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:18:33,433 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:33,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1528466691, now seen corresponding path program 12 times [2022-01-18 02:18:33,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:33,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605106617] [2022-01-18 02:18:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:33,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:33,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:33,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605106617] [2022-01-18 02:18:33,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605106617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:33,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346417209] [2022-01-18 02:18:33,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:18:33,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:33,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:33,556 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:33,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:18:33,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:18:33,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:33,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:18:33,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:33,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:34,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346417209] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:34,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:34,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2022-01-18 02:18:34,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374889997] [2022-01-18 02:18:34,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:34,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:18:34,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:18:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:18:34,107 INFO L87 Difference]: Start difference. First operand 1226 states and 3370 transitions. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:36,974 INFO L93 Difference]: Finished difference Result 3565 states and 9580 transitions. [2022-01-18 02:18:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 02:18:36,974 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:36,981 INFO L225 Difference]: With dead ends: 3565 [2022-01-18 02:18:36,981 INFO L226 Difference]: Without dead ends: 3463 [2022-01-18 02:18:36,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=847, Invalid=5315, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:18:36,983 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 443 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:36,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2281 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:18:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-01-18 02:18:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 1626. [2022-01-18 02:18:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 2.8295384615384616) internal successors, (4598), 1625 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 4598 transitions. [2022-01-18 02:18:37,013 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 4598 transitions. Word has length 72 [2022-01-18 02:18:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 4598 transitions. [2022-01-18 02:18:37,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 4598 transitions. [2022-01-18 02:18:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:37,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:37,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:37,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 02:18:37,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 02:18:37,229 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1747977597, now seen corresponding path program 13 times [2022-01-18 02:18:37,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012013158] [2022-01-18 02:18:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:37,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:37,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012013158] [2022-01-18 02:18:37,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012013158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417606039] [2022-01-18 02:18:37,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:18:37,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:37,398 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:37,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:18:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:37,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:37,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:38,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417606039] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:38,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:38,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-01-18 02:18:38,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525245785] [2022-01-18 02:18:38,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:38,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:18:38,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:18:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:18:38,155 INFO L87 Difference]: Start difference. First operand 1626 states and 4598 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:39,773 INFO L93 Difference]: Finished difference Result 2917 states and 7941 transitions. [2022-01-18 02:18:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:18:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:39,780 INFO L225 Difference]: With dead ends: 2917 [2022-01-18 02:18:39,780 INFO L226 Difference]: Without dead ends: 2917 [2022-01-18 02:18:39,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=436, Invalid=1544, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:18:39,781 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 377 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:39,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1407 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:18:39,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-18 02:18:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1754. [2022-01-18 02:18:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1753 states have (on average 2.8168853394181403) internal successors, (4938), 1753 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 4938 transitions. [2022-01-18 02:18:39,810 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 4938 transitions. Word has length 72 [2022-01-18 02:18:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:39,810 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 4938 transitions. [2022-01-18 02:18:39,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 4938 transitions. [2022-01-18 02:18:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:39,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:39,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:39,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 02:18:40,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:40,030 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2123688381, now seen corresponding path program 14 times [2022-01-18 02:18:40,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:40,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624186422] [2022-01-18 02:18:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:40,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:40,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624186422] [2022-01-18 02:18:40,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624186422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345835509] [2022-01-18 02:18:40,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:18:40,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:40,185 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:40,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:18:40,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:18:40,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:40,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:40,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:40,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345835509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:40,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:40,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 02:18:40,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629583492] [2022-01-18 02:18:40,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:40,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:18:40,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:18:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:18:40,936 INFO L87 Difference]: Start difference. First operand 1754 states and 4938 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:42,527 INFO L93 Difference]: Finished difference Result 3103 states and 8374 transitions. [2022-01-18 02:18:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:18:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:42,534 INFO L225 Difference]: With dead ends: 3103 [2022-01-18 02:18:42,534 INFO L226 Difference]: Without dead ends: 3103 [2022-01-18 02:18:42,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=672, Invalid=2298, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 02:18:42,535 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 475 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:42,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1143 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:18:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2022-01-18 02:18:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 1630. [2022-01-18 02:18:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 2.814610190300798) internal successors, (4585), 1629 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 4585 transitions. [2022-01-18 02:18:42,564 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 4585 transitions. Word has length 72 [2022-01-18 02:18:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:42,564 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 4585 transitions. [2022-01-18 02:18:42,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 4585 transitions. [2022-01-18 02:18:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:42,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:42,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:42,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:42,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:42,783 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2100956123, now seen corresponding path program 15 times [2022-01-18 02:18:42,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797899486] [2022-01-18 02:18:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:42,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:42,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797899486] [2022-01-18 02:18:42,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797899486] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502193461] [2022-01-18 02:18:42,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:18:42,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:42,896 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:42,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:18:42,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:18:42,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:42,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:42,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:43,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:43,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502193461] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:43,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-01-18 02:18:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279607061] [2022-01-18 02:18:43,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:43,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:18:43,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:18:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:18:43,694 INFO L87 Difference]: Start difference. First operand 1630 states and 4585 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:44,405 INFO L93 Difference]: Finished difference Result 2343 states and 6535 transitions. [2022-01-18 02:18:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 02:18:44,405 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:44,410 INFO L225 Difference]: With dead ends: 2343 [2022-01-18 02:18:44,410 INFO L226 Difference]: Without dead ends: 2271 [2022-01-18 02:18:44,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:18:44,410 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 220 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:44,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1167 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:18:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-01-18 02:18:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1674. [2022-01-18 02:18:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.8105200239091452) internal successors, (4702), 1673 states have internal predecessors, (4702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4702 transitions. [2022-01-18 02:18:44,436 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4702 transitions. Word has length 72 [2022-01-18 02:18:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 4702 transitions. [2022-01-18 02:18:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4702 transitions. [2022-01-18 02:18:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:44,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:44,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:44,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:44,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:44,656 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1872496129, now seen corresponding path program 16 times [2022-01-18 02:18:44,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520582330] [2022-01-18 02:18:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:44,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:44,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520582330] [2022-01-18 02:18:44,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520582330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942166479] [2022-01-18 02:18:44,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:18:44,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:44,792 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:44,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:18:44,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:18:44,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:44,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:44,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:45,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:45,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942166479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:45,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:45,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-01-18 02:18:45,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450071233] [2022-01-18 02:18:45,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:45,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:18:45,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:18:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:18:45,545 INFO L87 Difference]: Start difference. First operand 1674 states and 4702 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:46,772 INFO L93 Difference]: Finished difference Result 3521 states and 9599 transitions. [2022-01-18 02:18:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:18:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:46,779 INFO L225 Difference]: With dead ends: 3521 [2022-01-18 02:18:46,779 INFO L226 Difference]: Without dead ends: 3521 [2022-01-18 02:18:46,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 02:18:46,781 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 487 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:46,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1281 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:18:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-01-18 02:18:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 1834. [2022-01-18 02:18:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 2.8532460447354064) internal successors, (5230), 1833 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 5230 transitions. [2022-01-18 02:18:46,816 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 5230 transitions. Word has length 72 [2022-01-18 02:18:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:46,817 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 5230 transitions. [2022-01-18 02:18:46,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 5230 transitions. [2022-01-18 02:18:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:46,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:46,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:46,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:47,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:47,037 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash 42894595, now seen corresponding path program 17 times [2022-01-18 02:18:47,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105908743] [2022-01-18 02:18:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:47,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:47,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:47,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105908743] [2022-01-18 02:18:47,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105908743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:47,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488594572] [2022-01-18 02:18:47,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:18:47,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:47,196 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:47,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:18:47,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:18:47,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:47,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:18:47,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:47,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:47,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488594572] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:47,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:47,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2022-01-18 02:18:47,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489078156] [2022-01-18 02:18:47,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:47,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:18:47,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:18:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:18:47,767 INFO L87 Difference]: Start difference. First operand 1834 states and 5230 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:50,538 INFO L93 Difference]: Finished difference Result 3826 states and 10462 transitions. [2022-01-18 02:18:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 02:18:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:50,544 INFO L225 Difference]: With dead ends: 3826 [2022-01-18 02:18:50,544 INFO L226 Difference]: Without dead ends: 3778 [2022-01-18 02:18:50,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1139, Invalid=5023, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:18:50,547 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 619 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:50,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1782 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:18:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-01-18 02:18:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2006. [2022-01-18 02:18:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 2005 states have (on average 2.8663341645885287) internal successors, (5747), 2005 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 5747 transitions. [2022-01-18 02:18:50,591 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 5747 transitions. Word has length 72 [2022-01-18 02:18:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:50,591 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 5747 transitions. [2022-01-18 02:18:50,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 5747 transitions. [2022-01-18 02:18:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:50,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:50,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:50,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:50,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:50,804 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1849763871, now seen corresponding path program 18 times [2022-01-18 02:18:50,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:50,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515053456] [2022-01-18 02:18:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:50,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:50,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515053456] [2022-01-18 02:18:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515053456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564350138] [2022-01-18 02:18:50,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:18:50,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:50,914 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:18:50,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:18:50,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:50,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:51,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:51,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564350138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:51,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:51,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 02:18:51,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304654323] [2022-01-18 02:18:51,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:51,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:18:51,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:18:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:18:51,694 INFO L87 Difference]: Start difference. First operand 2006 states and 5747 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:52,918 INFO L93 Difference]: Finished difference Result 3556 states and 10040 transitions. [2022-01-18 02:18:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:18:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:52,923 INFO L225 Difference]: With dead ends: 3556 [2022-01-18 02:18:52,923 INFO L226 Difference]: Without dead ends: 3472 [2022-01-18 02:18:52,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=442, Invalid=1450, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 02:18:52,924 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 364 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:52,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 826 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:18:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2022-01-18 02:18:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2214. [2022-01-18 02:18:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2213 states have (on average 2.8734749209218258) internal successors, (6359), 2213 states have internal predecessors, (6359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 6359 transitions. [2022-01-18 02:18:52,956 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 6359 transitions. Word has length 72 [2022-01-18 02:18:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:52,956 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 6359 transitions. [2022-01-18 02:18:52,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 6359 transitions. [2022-01-18 02:18:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:52,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:52,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:52,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:53,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:53,160 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1491760117, now seen corresponding path program 19 times [2022-01-18 02:18:53,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:53,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399421598] [2022-01-18 02:18:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:53,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:53,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399421598] [2022-01-18 02:18:53,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399421598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550331458] [2022-01-18 02:18:53,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:18:53,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:53,278 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:53,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:18:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:53,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:53,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:53,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550331458] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:53,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:53,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-01-18 02:18:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403897865] [2022-01-18 02:18:53,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:53,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:18:53,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:18:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:18:53,974 INFO L87 Difference]: Start difference. First operand 2214 states and 6359 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:54,391 INFO L93 Difference]: Finished difference Result 2847 states and 8105 transitions. [2022-01-18 02:18:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 02:18:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:54,397 INFO L225 Difference]: With dead ends: 2847 [2022-01-18 02:18:54,397 INFO L226 Difference]: Without dead ends: 2775 [2022-01-18 02:18:54,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-01-18 02:18:54,398 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 296 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 710 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:18:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-01-18 02:18:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2214. [2022-01-18 02:18:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2213 states have (on average 2.869859918662449) internal successors, (6351), 2213 states have internal predecessors, (6351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 6351 transitions. [2022-01-18 02:18:54,453 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 6351 transitions. Word has length 72 [2022-01-18 02:18:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:54,453 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 6351 transitions. [2022-01-18 02:18:54,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 6351 transitions. [2022-01-18 02:18:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:54,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:54,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:54,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:54,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 02:18:54,667 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2112399269, now seen corresponding path program 20 times [2022-01-18 02:18:54,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:54,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373528141] [2022-01-18 02:18:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:54,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:54,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:54,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373528141] [2022-01-18 02:18:54,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373528141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:54,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809736111] [2022-01-18 02:18:54,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:18:54,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:54,805 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:54,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:18:54,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:18:54,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:54,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:18:54,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:55,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:18:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:55,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809736111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:55,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 23 [2022-01-18 02:18:55,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019201824] [2022-01-18 02:18:55,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:55,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:18:55,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:18:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:18:55,321 INFO L87 Difference]: Start difference. First operand 2214 states and 6351 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:57,840 INFO L93 Difference]: Finished difference Result 5256 states and 14553 transitions. [2022-01-18 02:18:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 02:18:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:18:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:57,847 INFO L225 Difference]: With dead ends: 5256 [2022-01-18 02:18:57,847 INFO L226 Difference]: Without dead ends: 5154 [2022-01-18 02:18:57,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=5741, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:18:57,848 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 630 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:57,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2768 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:18:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2022-01-18 02:18:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 2362. [2022-01-18 02:18:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 2.9047013977128335) internal successors, (6858), 2361 states have internal predecessors, (6858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 6858 transitions. [2022-01-18 02:18:57,889 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6858 transitions. Word has length 72 [2022-01-18 02:18:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:57,889 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 6858 transitions. [2022-01-18 02:18:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:18:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6858 transitions. [2022-01-18 02:18:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:18:57,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:57,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:57,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:58,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 02:18:58,107 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 934362475, now seen corresponding path program 21 times [2022-01-18 02:18:58,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:58,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902378972] [2022-01-18 02:18:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:58,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:58,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:58,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902378972] [2022-01-18 02:18:58,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902378972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:58,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662075637] [2022-01-18 02:18:58,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:18:58,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:58,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:58,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:58,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:18:58,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:18:58,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:58,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:18:58,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:18:58,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:19:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:01,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662075637] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:19:01,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:19:01,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 02:19:01,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927836858] [2022-01-18 02:19:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:19:01,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:19:01,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:19:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:19:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:19:01,579 INFO L87 Difference]: Start difference. First operand 2362 states and 6858 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:19:03,226 INFO L93 Difference]: Finished difference Result 4397 states and 12309 transitions. [2022-01-18 02:19:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:19:03,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:19:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:19:03,233 INFO L225 Difference]: With dead ends: 4397 [2022-01-18 02:19:03,234 INFO L226 Difference]: Without dead ends: 4397 [2022-01-18 02:19:03,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:19:03,234 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 485 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:19:03,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1274 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:19:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-01-18 02:19:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 2630. [2022-01-18 02:19:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2629 states have (on average 2.907189045264359) internal successors, (7643), 2629 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 7643 transitions. [2022-01-18 02:19:03,284 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 7643 transitions. Word has length 72 [2022-01-18 02:19:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:19:03,284 INFO L470 AbstractCegarLoop]: Abstraction has 2630 states and 7643 transitions. [2022-01-18 02:19:03,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 7643 transitions. [2022-01-18 02:19:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:19:03,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:19:03,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:19:03,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 02:19:03,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 02:19:03,501 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:19:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:19:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1604543435, now seen corresponding path program 22 times [2022-01-18 02:19:03,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:19:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016324031] [2022-01-18 02:19:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:19:03,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:19:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:19:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:03,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:19:03,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016324031] [2022-01-18 02:19:03,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016324031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:19:03,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210149769] [2022-01-18 02:19:03,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:19:03,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:19:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:19:03,620 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:19:03,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:19:03,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:19:03,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:19:03,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:19:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:19:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:03,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:19:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:22,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210149769] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:19:22,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:19:22,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 02:19:22,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848494639] [2022-01-18 02:19:22,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:19:22,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 02:19:22,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:19:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 02:19:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 02:19:22,489 INFO L87 Difference]: Start difference. First operand 2630 states and 7643 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:19:23,977 INFO L93 Difference]: Finished difference Result 3511 states and 10098 transitions. [2022-01-18 02:19:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 02:19:23,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:19:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:19:23,982 INFO L225 Difference]: With dead ends: 3511 [2022-01-18 02:19:23,982 INFO L226 Difference]: Without dead ends: 3463 [2022-01-18 02:19:23,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:19:23,983 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 282 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:19:23,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 1012 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:19:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-01-18 02:19:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 2678. [2022-01-18 02:19:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.901382144191259) internal successors, (7767), 2677 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7767 transitions. [2022-01-18 02:19:24,019 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7767 transitions. Word has length 72 [2022-01-18 02:19:24,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:19:24,020 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 7767 transitions. [2022-01-18 02:19:24,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:19:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7767 transitions. [2022-01-18 02:19:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:19:24,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:19:24,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:19:24,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 02:19:24,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:19:24,241 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:19:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:19:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash -664216311, now seen corresponding path program 23 times [2022-01-18 02:19:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:19:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027244481] [2022-01-18 02:19:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:19:24,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:19:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:19:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:24,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:19:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027244481] [2022-01-18 02:19:24,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027244481] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:19:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326281493] [2022-01-18 02:19:24,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:19:24,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:19:24,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:19:24,412 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:19:24,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 02:19:24,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:19:24,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:19:24,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:19:24,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:19:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:19:24,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:22:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:22:29,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326281493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:22:29,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:22:29,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-01-18 02:22:29,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3702155] [2022-01-18 02:22:29,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:22:29,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 02:22:29,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:22:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 02:22:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-01-18 02:22:29,659 INFO L87 Difference]: Start difference. First operand 2678 states and 7767 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:22:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:22:31,664 INFO L93 Difference]: Finished difference Result 4107 states and 11508 transitions. [2022-01-18 02:22:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:22:31,665 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:22:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:22:31,671 INFO L225 Difference]: With dead ends: 4107 [2022-01-18 02:22:31,671 INFO L226 Difference]: Without dead ends: 4107 [2022-01-18 02:22:31,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 02:22:31,672 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 428 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:22:31,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1097 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:22:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2022-01-18 02:22:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2822. [2022-01-18 02:22:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2821 states have (on average 2.900744416873449) internal successors, (8183), 2821 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:22:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 8183 transitions. [2022-01-18 02:22:31,710 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 8183 transitions. Word has length 72 [2022-01-18 02:22:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:22:31,710 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 8183 transitions. [2022-01-18 02:22:31,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:22:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 8183 transitions. [2022-01-18 02:22:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:22:31,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:22:31,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:22:31,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 02:22:31,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 02:22:31,930 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:22:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:22:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1091845075, now seen corresponding path program 24 times [2022-01-18 02:22:31,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:22:31,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867018791] [2022-01-18 02:22:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:22:31,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:22:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:22:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:22:32,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:22:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867018791] [2022-01-18 02:22:32,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867018791] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:22:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640664197] [2022-01-18 02:22:32,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:22:32,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:22:32,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:22:32,046 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:22:32,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 02:22:32,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:22:32,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:22:32,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:22:32,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:22:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:22:32,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:22:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:22:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640664197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:22:57,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:22:57,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 02:22:57,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395050084] [2022-01-18 02:22:57,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:22:57,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:22:57,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:22:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:22:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:22:57,641 INFO L87 Difference]: Start difference. First operand 2822 states and 8183 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:23:00,291 INFO L93 Difference]: Finished difference Result 4169 states and 11894 transitions. [2022-01-18 02:23:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:23:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:23:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:23:00,298 INFO L225 Difference]: With dead ends: 4169 [2022-01-18 02:23:00,298 INFO L226 Difference]: Without dead ends: 4121 [2022-01-18 02:23:00,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 02:23:00,299 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 468 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:23:00,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 959 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:23:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2022-01-18 02:23:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 2774. [2022-01-18 02:23:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2773 states have (on average 2.899026325279481) internal successors, (8039), 2773 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 8039 transitions. [2022-01-18 02:23:00,353 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 8039 transitions. Word has length 72 [2022-01-18 02:23:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:23:00,353 INFO L470 AbstractCegarLoop]: Abstraction has 2774 states and 8039 transitions. [2022-01-18 02:23:00,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 8039 transitions. [2022-01-18 02:23:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:23:00,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:23:00,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:23:00,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 02:23:00,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:00,558 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:23:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:23:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2000622901, now seen corresponding path program 25 times [2022-01-18 02:23:00,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:23:00,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305358219] [2022-01-18 02:23:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:23:00,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:23:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:23:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:00,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:23:00,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305358219] [2022-01-18 02:23:00,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305358219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:23:00,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136991993] [2022-01-18 02:23:00,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:23:00,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:00,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:23:00,663 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:23:00,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 02:23:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:23:00,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:23:00,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:23:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:00,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:23:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:22,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136991993] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:23:22,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:23:22,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 02:23:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317671958] [2022-01-18 02:23:22,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:23:22,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:23:22,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:23:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:23:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:23:22,223 INFO L87 Difference]: Start difference. First operand 2774 states and 8039 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:23:23,187 INFO L93 Difference]: Finished difference Result 3593 states and 10296 transitions. [2022-01-18 02:23:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 02:23:23,188 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:23:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:23:23,194 INFO L225 Difference]: With dead ends: 3593 [2022-01-18 02:23:23,194 INFO L226 Difference]: Without dead ends: 3521 [2022-01-18 02:23:23,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:23:23,194 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 245 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:23:23,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1046 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:23:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-01-18 02:23:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2818. [2022-01-18 02:23:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2817 states have (on average 2.895278665246716) internal successors, (8156), 2817 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 8156 transitions. [2022-01-18 02:23:23,233 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 8156 transitions. Word has length 72 [2022-01-18 02:23:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:23:23,233 INFO L470 AbstractCegarLoop]: Abstraction has 2818 states and 8156 transitions. [2022-01-18 02:23:23,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 8156 transitions. [2022-01-18 02:23:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:23:23,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:23:23,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:23:23,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 02:23:23,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-01-18 02:23:23,439 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:23:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:23:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1809397223, now seen corresponding path program 26 times [2022-01-18 02:23:23,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:23:23,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219369072] [2022-01-18 02:23:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:23:23,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:23:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:23:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:23,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:23:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219369072] [2022-01-18 02:23:23,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219369072] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:23:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981015143] [2022-01-18 02:23:23,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:23:23,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:23:23,555 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:23:23,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 02:23:23,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:23:23,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:23:23,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:23:23,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:23:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:23,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:23:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981015143] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:23:24,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:23:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 02:23:24,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642387093] [2022-01-18 02:23:24,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:23:24,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:23:24,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:23:24,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:23:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=261, Unknown=1, NotChecked=0, Total=342 [2022-01-18 02:23:24,863 INFO L87 Difference]: Start difference. First operand 2818 states and 8156 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:23:26,156 INFO L93 Difference]: Finished difference Result 4502 states and 12688 transitions. [2022-01-18 02:23:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:23:26,156 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:23:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:23:26,164 INFO L225 Difference]: With dead ends: 4502 [2022-01-18 02:23:26,164 INFO L226 Difference]: Without dead ends: 4502 [2022-01-18 02:23:26,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=492, Invalid=1577, Unknown=1, NotChecked=0, Total=2070 [2022-01-18 02:23:26,165 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 521 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:23:26,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 1201 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 425 Invalid, 0 Unknown, 62 Unchecked, 0.4s Time] [2022-01-18 02:23:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2022-01-18 02:23:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 2986. [2022-01-18 02:23:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 2.9192629815745392) internal successors, (8714), 2985 states have internal predecessors, (8714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 8714 transitions. [2022-01-18 02:23:26,222 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 8714 transitions. Word has length 72 [2022-01-18 02:23:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:23:26,223 INFO L470 AbstractCegarLoop]: Abstraction has 2986 states and 8714 transitions. [2022-01-18 02:23:26,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 8714 transitions. [2022-01-18 02:23:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:23:26,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:23:26,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:23:26,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 02:23:26,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:26,443 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:23:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:23:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash -53335837, now seen corresponding path program 27 times [2022-01-18 02:23:26,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:23:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779921563] [2022-01-18 02:23:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:23:26,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:23:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:23:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:26,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:23:26,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779921563] [2022-01-18 02:23:26,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779921563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:23:26,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372286891] [2022-01-18 02:23:26,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:23:26,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:23:26,557 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:23:26,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 02:23:26,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:23:26,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:23:26,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:23:26,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:23:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:26,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:23:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:46,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372286891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:23:46,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:23:46,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 02:23:46,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207074514] [2022-01-18 02:23:46,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:23:46,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:23:46,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:23:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:23:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:23:46,682 INFO L87 Difference]: Start difference. First operand 2986 states and 8714 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:23:48,932 INFO L93 Difference]: Finished difference Result 4359 states and 12480 transitions. [2022-01-18 02:23:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:23:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:23:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:23:48,937 INFO L225 Difference]: With dead ends: 4359 [2022-01-18 02:23:48,937 INFO L226 Difference]: Without dead ends: 4311 [2022-01-18 02:23:48,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=573, Invalid=2183, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 02:23:48,938 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 522 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:23:48,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1276 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:23:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-01-18 02:23:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 2946. [2022-01-18 02:23:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2945 states have (on average 2.903904923599321) internal successors, (8552), 2945 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 8552 transitions. [2022-01-18 02:23:48,976 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 8552 transitions. Word has length 72 [2022-01-18 02:23:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:23:48,976 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 8552 transitions. [2022-01-18 02:23:48,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:23:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 8552 transitions. [2022-01-18 02:23:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:23:48,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:23:48,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:23:48,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 02:23:49,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:49,188 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:23:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:23:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash 855441989, now seen corresponding path program 28 times [2022-01-18 02:23:49,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:23:49,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089771145] [2022-01-18 02:23:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:23:49,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:23:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:23:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:49,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:23:49,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089771145] [2022-01-18 02:23:49,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089771145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:23:49,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175822488] [2022-01-18 02:23:49,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:23:49,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:23:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:23:49,303 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:23:49,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 02:23:49,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:23:49,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:23:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:23:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:23:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:23:49,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:24:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:24:11,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175822488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:24:11,911 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:24:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 02:24:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31659658] [2022-01-18 02:24:11,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:24:11,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:24:11,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:24:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:24:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:24:11,912 INFO L87 Difference]: Start difference. First operand 2946 states and 8552 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:24:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:24:14,082 INFO L93 Difference]: Finished difference Result 4673 states and 13300 transitions. [2022-01-18 02:24:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:24:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:24:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:24:14,089 INFO L225 Difference]: With dead ends: 4673 [2022-01-18 02:24:14,089 INFO L226 Difference]: Without dead ends: 4601 [2022-01-18 02:24:14,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:24:14,090 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 368 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:24:14,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1125 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:24:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2022-01-18 02:24:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3102. [2022-01-18 02:24:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3101 states have (on average 2.9026120606256045) internal successors, (9001), 3101 states have internal predecessors, (9001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:24:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 9001 transitions. [2022-01-18 02:24:14,150 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 9001 transitions. Word has length 72 [2022-01-18 02:24:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:24:14,150 INFO L470 AbstractCegarLoop]: Abstraction has 3102 states and 9001 transitions. [2022-01-18 02:24:14,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:24:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 9001 transitions. [2022-01-18 02:24:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:24:14,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:24:14,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:24:14,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 02:24:14,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:24:14,356 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:24:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:24:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1488314149, now seen corresponding path program 29 times [2022-01-18 02:24:14,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:24:14,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339314483] [2022-01-18 02:24:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:24:14,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:24:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:24:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:24:14,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:24:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339314483] [2022-01-18 02:24:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339314483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:24:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596010947] [2022-01-18 02:24:14,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:24:14,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:24:14,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:24:14,454 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:24:14,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 02:24:14,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:24:14,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:24:14,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:24:14,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:24:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:24:14,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:31:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:26,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596010947] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:31:26,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:31:26,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-18 02:31:26,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032580338] [2022-01-18 02:31:26,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:31:26,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:31:26,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:31:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:31:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:31:26,919 INFO L87 Difference]: Start difference. First operand 3102 states and 9001 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:31:29,046 INFO L93 Difference]: Finished difference Result 3816 states and 10979 transitions. [2022-01-18 02:31:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 02:31:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:31:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:31:29,052 INFO L225 Difference]: With dead ends: 3816 [2022-01-18 02:31:29,052 INFO L226 Difference]: Without dead ends: 3768 [2022-01-18 02:31:29,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-01-18 02:31:29,053 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 238 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:31:29,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 763 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:31:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2022-01-18 02:31:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3102. [2022-01-18 02:31:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3101 states have (on average 2.9000322476620446) internal successors, (8993), 3101 states have internal predecessors, (8993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 8993 transitions. [2022-01-18 02:31:29,109 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 8993 transitions. Word has length 72 [2022-01-18 02:31:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:31:29,109 INFO L470 AbstractCegarLoop]: Abstraction has 3102 states and 8993 transitions. [2022-01-18 02:31:29,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 8993 transitions. [2022-01-18 02:31:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:31:29,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:31:29,114 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:31:29,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 02:31:29,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 02:31:29,327 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:31:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:31:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash 191604221, now seen corresponding path program 30 times [2022-01-18 02:31:29,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:31:29,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643526910] [2022-01-18 02:31:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:31:29,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:31:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:31:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:29,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:31:29,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643526910] [2022-01-18 02:31:29,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643526910] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:31:29,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473438991] [2022-01-18 02:31:29,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:31:29,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:31:29,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:31:29,580 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:31:29,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 02:31:29,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:31:29,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:31:29,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:31:29,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:31:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:29,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:31:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:38,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473438991] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:31:38,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:31:38,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 24 [2022-01-18 02:31:38,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147716318] [2022-01-18 02:31:38,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:31:38,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:31:38,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:31:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:31:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=445, Unknown=4, NotChecked=0, Total=552 [2022-01-18 02:31:38,947 INFO L87 Difference]: Start difference. First operand 3102 states and 8993 transitions. Second operand has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:31:40,896 INFO L93 Difference]: Finished difference Result 7054 states and 20282 transitions. [2022-01-18 02:31:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 02:31:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:31:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:31:40,906 INFO L225 Difference]: With dead ends: 7054 [2022-01-18 02:31:40,907 INFO L226 Difference]: Without dead ends: 6550 [2022-01-18 02:31:40,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=377, Invalid=1971, Unknown=4, NotChecked=0, Total=2352 [2022-01-18 02:31:40,907 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 626 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:31:40,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 1996 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:31:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6550 states. [2022-01-18 02:31:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6550 to 4084. [2022-01-18 02:31:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 4083 states have (on average 2.9128092089150135) internal successors, (11893), 4083 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 11893 transitions. [2022-01-18 02:31:40,972 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 11893 transitions. Word has length 74 [2022-01-18 02:31:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:31:40,972 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 11893 transitions. [2022-01-18 02:31:40,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 11893 transitions. [2022-01-18 02:31:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:31:40,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:31:40,978 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:31:40,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 02:31:41,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 02:31:41,179 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:31:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:31:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -676692899, now seen corresponding path program 31 times [2022-01-18 02:31:41,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:31:41,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976971814] [2022-01-18 02:31:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:31:41,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:31:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:31:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:41,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:31:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976971814] [2022-01-18 02:31:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976971814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:31:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442986382] [2022-01-18 02:31:41,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:31:41,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:31:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:31:41,365 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:31:41,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 02:31:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:31:41,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:31:41,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:31:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:41,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:31:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:42,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442986382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:31:42,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:31:42,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 10] total 24 [2022-01-18 02:31:42,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897895583] [2022-01-18 02:31:42,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:31:42,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:31:42,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:31:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:31:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:31:42,247 INFO L87 Difference]: Start difference. First operand 4084 states and 11893 transitions. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:31:43,380 INFO L93 Difference]: Finished difference Result 5694 states and 16307 transitions. [2022-01-18 02:31:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 02:31:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 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 74 [2022-01-18 02:31:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:31:43,389 INFO L225 Difference]: With dead ends: 5694 [2022-01-18 02:31:43,389 INFO L226 Difference]: Without dead ends: 5664 [2022-01-18 02:31:43,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=1495, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 02:31:43,390 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 344 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:31:43,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1972 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:31:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2022-01-18 02:31:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 4536. [2022-01-18 02:31:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 4535 states have (on average 2.9177508269018744) internal successors, (13232), 4535 states have internal predecessors, (13232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 13232 transitions. [2022-01-18 02:31:43,452 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 13232 transitions. Word has length 74 [2022-01-18 02:31:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:31:43,452 INFO L470 AbstractCegarLoop]: Abstraction has 4536 states and 13232 transitions. [2022-01-18 02:31:43,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:31:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 13232 transitions. [2022-01-18 02:31:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:31:43,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:31:43,458 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:31:43,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 02:31:43,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:31:43,664 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:31:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:31:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1591505987, now seen corresponding path program 32 times [2022-01-18 02:31:43,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:31:43,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037434119] [2022-01-18 02:31:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:31:43,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:31:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:31:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:43,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:31:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037434119] [2022-01-18 02:31:43,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037434119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:31:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477912160] [2022-01-18 02:31:43,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:31:43,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:31:43,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:31:43,876 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:31:43,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 02:31:43,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:31:43,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:31:43,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:31:43,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:31:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:31:44,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-18 02:31:45,358 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 02:31:45,360 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:31:45,379 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:31:45,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 02:31:45,399 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:31:45,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 02:31:45,561 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 10ms.. [2022-01-18 02:31:45,562 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:31:45,562 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:31:45,564 INFO L732 BasicCegarLoop]: Path program histogram: [32, 4, 1, 1] [2022-01-18 02:31:45,566 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:31:45,566 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:31:45,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:31:45 BasicIcfg [2022-01-18 02:31:45,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:31:45,569 INFO L158 Benchmark]: Toolchain (without parser) took 867800.81ms. Allocated memory was 339.7MB in the beginning and 511.7MB in the end (delta: 172.0MB). Free memory was 284.2MB in the beginning and 348.4MB in the end (delta: -64.2MB). Peak memory consumption was 110.2MB. Max. memory is 16.0GB. [2022-01-18 02:31:45,569 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 339.7MB. Free memory is still 301.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:31:45,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.15ms. Allocated memory was 339.7MB in the beginning and 425.7MB in the end (delta: 86.0MB). Free memory was 284.1MB in the beginning and 397.3MB in the end (delta: -113.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2022-01-18 02:31:45,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.56ms. Allocated memory is still 425.7MB. Free memory was 397.3MB in the beginning and 396.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:31:45,569 INFO L158 Benchmark]: Boogie Preprocessor took 27.76ms. Allocated memory is still 425.7MB. Free memory was 396.3MB in the beginning and 395.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:31:45,569 INFO L158 Benchmark]: RCFGBuilder took 292.42ms. Allocated memory is still 425.7MB. Free memory was 395.2MB in the beginning and 380.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 02:31:45,570 INFO L158 Benchmark]: TraceAbstraction took 867259.84ms. Allocated memory was 425.7MB in the beginning and 511.7MB in the end (delta: 86.0MB). Free memory was 380.5MB in the beginning and 348.4MB in the end (delta: 32.1MB). Peak memory consumption was 119.5MB. Max. memory is 16.0GB. [2022-01-18 02:31:45,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 339.7MB. Free memory is still 301.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 194.15ms. Allocated memory was 339.7MB in the beginning and 425.7MB in the end (delta: 86.0MB). Free memory was 284.1MB in the beginning and 397.3MB in the end (delta: -113.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.56ms. Allocated memory is still 425.7MB. Free memory was 397.3MB in the beginning and 396.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 27.76ms. Allocated memory is still 425.7MB. Free memory was 396.3MB in the beginning and 395.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 292.42ms. Allocated memory is still 425.7MB. Free memory was 395.2MB in the beginning and 380.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 867259.84ms. Allocated memory was 425.7MB in the beginning and 511.7MB in the end (delta: 86.0MB). Free memory was 380.5MB in the beginning and 348.4MB in the end (delta: 32.1MB). Peak memory consumption was 119.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 10ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 10ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 10ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 867.2s, OverallIterations: 38, TraceHistogramMax: 2, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.1s, AutomataDifference: 55.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13689 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13689 mSDsluCounter, 44004 SdHoareTripleChecker+Invalid, 15.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62 IncrementalHoareTripleChecker+Unchecked, 41637 mSDsCounter, 1793 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18194 IncrementalHoareTripleChecker+Invalid, 20049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1793 mSolverCounterUnsat, 4726 mSDtfsCounter, 18194 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6187 GetRequests, 4580 SyntacticMatches, 41 SemanticMatches, 1566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26818 ImplicationChecksByTransitivity, 53.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4536occurred in iteration=37, InterpolantAutomatonStates: 1383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 39769 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 798.9s InterpolantComputationTime, 4897 NumberOfCodeBlocks, 4795 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 7087 ConstructedInterpolants, 1 QuantifiedInterpolants, 40071 SizeOfPredicates, 332 NumberOfNonLiveVariables, 4828 ConjunctsInSsa, 397 ConjunctsInUnsatCore, 101 InterpolantComputations, 6 PerfectInterpolantSequences, 289/732 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown