/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 01:19:56,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 01:19:56,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 01:19:56,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 01:19:56,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-09 01:19:56,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-09 01:19:56,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-09 01:19:56,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-09 01:19:56,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-09 01:19:56,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-09 01:19:56,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-09 01:19:56,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-09 01:19:56,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-09 01:19:56,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-09 01:19:56,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-09 01:19:56,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-09 01:19:56,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-09 01:19:56,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 01:19:56,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 01:19:56,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 01:19:56,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-09 01:19:56,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 01:19:56,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 01:19:56,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 01:19:56,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 01:19:56,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 01:19:56,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 01:19:56,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 01:19:56,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 01:19:56,142 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 01:19:56,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 01:19:56,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 01:19:56,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 01:19:56,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 01:19:56,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:19:56,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 01:19:56,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 01:19:56,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 01:19:56,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 01:19:56,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 01:19:56,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 01:19:56,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-09 01:19:56,373 INFO L275 PluginConnector]: CDTParser initialized [2022-02-09 01:19:56,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-02-09 01:19:56,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf8622c8/ec83959b1a374428aa19c78aa5df689f/FLAG43edc2f53 [2022-02-09 01:19:56,803 INFO L306 CDTParser]: Found 1 translation units. [2022-02-09 01:19:56,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-02-09 01:19:56,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf8622c8/ec83959b1a374428aa19c78aa5df689f/FLAG43edc2f53 [2022-02-09 01:19:56,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf8622c8/ec83959b1a374428aa19c78aa5df689f [2022-02-09 01:19:56,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 01:19:56,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-09 01:19:56,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-09 01:19:56,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-09 01:19:56,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-09 01:19:56,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:19:56" (1/1) ... [2022-02-09 01:19:56,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5be652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:56, skipping insertion in model container [2022-02-09 01:19:56,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 01:19:56" (1/1) ... [2022-02-09 01:19:56,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-09 01:19:56,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-09 01:19:57,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-02-09 01:19:57,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:19:57,066 INFO L203 MainTranslator]: Completed pre-run [2022-02-09 01:19:57,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-02-09 01:19:57,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-09 01:19:57,108 INFO L208 MainTranslator]: Completed translation [2022-02-09 01:19:57,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57 WrapperNode [2022-02-09 01:19:57,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-09 01:19:57,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 01:19:57,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 01:19:57,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 01:19:57,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,152 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-02-09 01:19:57,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 01:19:57,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 01:19:57,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 01:19:57,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 01:19:57,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 01:19:57,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 01:19:57,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 01:19:57,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 01:19:57,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (1/1) ... [2022-02-09 01:19:57,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 01:19:57,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:57,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 01:19:57,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 01:19:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-09 01:19:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 01:19:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 01:19:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 01:19:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 01:19:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-09 01:19:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-09 01:19:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-09 01:19:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-09 01:19:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-09 01:19:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-09 01:19:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 01:19:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 01:19:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-09 01:19:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-09 01:19:57,257 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 01:19:57,328 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 01:19:57,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 01:19:57,604 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 01:19:57,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 01:19:57,682 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-09 01:19:57,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:19:57 BoogieIcfgContainer [2022-02-09 01:19:57,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 01:19:57,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 01:19:57,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 01:19:57,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 01:19:57,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.02 01:19:56" (1/3) ... [2022-02-09 01:19:57,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f0015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:19:57, skipping insertion in model container [2022-02-09 01:19:57,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 01:19:57" (2/3) ... [2022-02-09 01:19:57,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f0015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:19:57, skipping insertion in model container [2022-02-09 01:19:57,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:19:57" (3/3) ... [2022-02-09 01:19:57,700 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-02-09 01:19:57,704 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 01:19:57,704 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 01:19:57,705 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 01:19:57,705 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 01:19:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,749 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,753 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,755 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,756 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 01:19:57,760 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 01:19:57,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 01:19:57,807 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 01:19:57,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 01:19:57,818 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-02-09 01:19:57,875 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-09 01:19:57,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:57,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:57,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-02-09 01:19:57,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:57,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972483582] [2022-02-09 01:19:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:57,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:58,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:58,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972483582] [2022-02-09 01:19:58,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972483582] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:19:58,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:19:58,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 01:19:58,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847460382] [2022-02-09 01:19:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:19:58,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-09 01:19:58,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-09 01:19:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:19:58,106 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:58,158 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-02-09 01:19:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 01:19:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-09 01:19:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:58,173 INFO L225 Difference]: With dead ends: 676 [2022-02-09 01:19:58,174 INFO L226 Difference]: Without dead ends: 642 [2022-02-09 01:19:58,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-09 01:19:58,178 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:58,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:19:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-02-09 01:19:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-02-09 01:19:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-02-09 01:19:58,233 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-02-09 01:19:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:58,233 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-02-09 01:19:58,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-02-09 01:19:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-09 01:19:58,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:58,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:58,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 01:19:58,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-02-09 01:19:58,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:58,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8020518] [2022-02-09 01:19:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:58,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:58,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:58,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8020518] [2022-02-09 01:19:58,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8020518] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:19:58,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:19:58,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 01:19:58,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379651965] [2022-02-09 01:19:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:19:58,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 01:19:58,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 01:19:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 01:19:58,393 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:58,479 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-02-09 01:19:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 01:19:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-02-09 01:19:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:58,485 INFO L225 Difference]: With dead ends: 1217 [2022-02-09 01:19:58,486 INFO L226 Difference]: Without dead ends: 864 [2022-02-09 01:19:58,489 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 [2022-02-09 01:19:58,491 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:58,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:19:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-02-09 01:19:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-02-09 01:19:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-02-09 01:19:58,520 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-02-09 01:19:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:58,522 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-02-09 01:19:58,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-02-09 01:19:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-09 01:19:58,527 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:58,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:58,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 01:19:58,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:58,528 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-02-09 01:19:58,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:58,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557617781] [2022-02-09 01:19:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:58,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:58,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:58,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557617781] [2022-02-09 01:19:58,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557617781] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:19:58,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:19:58,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 01:19:58,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498520675] [2022-02-09 01:19:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:19:58,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 01:19:58,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 01:19:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 01:19:58,645 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:58,671 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-02-09 01:19:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 01:19:58,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-09 01:19:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:58,675 INFO L225 Difference]: With dead ends: 843 [2022-02-09 01:19:58,675 INFO L226 Difference]: Without dead ends: 795 [2022-02-09 01:19:58,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 01:19:58,676 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:58,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 159 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:19:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-02-09 01:19:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-02-09 01:19:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-02-09 01:19:58,701 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-02-09 01:19:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:58,702 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-02-09 01:19:58,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-02-09 01:19:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-09 01:19:58,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:58,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:58,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 01:19:58,706 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 653585244, now seen corresponding path program 1 times [2022-02-09 01:19:58,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:58,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241261650] [2022-02-09 01:19:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:58,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:19:58,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:58,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241261650] [2022-02-09 01:19:58,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241261650] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:19:58,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:19:58,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-09 01:19:58,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157811006] [2022-02-09 01:19:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:19:58,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-09 01:19:58,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:19:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-09 01:19:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-09 01:19:58,839 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:19:58,981 INFO L93 Difference]: Finished difference Result 924 states and 2269 transitions. [2022-02-09 01:19:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 01:19:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-02-09 01:19:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:19:58,986 INFO L225 Difference]: With dead ends: 924 [2022-02-09 01:19:58,986 INFO L226 Difference]: Without dead ends: 801 [2022-02-09 01:19:58,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-02-09 01:19:58,994 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 267 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:19:58,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 484 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 01:19:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-02-09 01:19:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-02-09 01:19:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-02-09 01:19:59,014 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-02-09 01:19:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:19:59,015 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-02-09 01:19:59,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:19:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-02-09 01:19:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-09 01:19:59,018 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:19:59,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:19:59,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-09 01:19:59,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:19:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:19:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1083191651, now seen corresponding path program 1 times [2022-02-09 01:19:59,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:19:59,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307446727] [2022-02-09 01:19:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:59,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:19:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:19:59,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:19:59,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307446727] [2022-02-09 01:19:59,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307446727] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:19:59,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477296005] [2022-02-09 01:19:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:19:59,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:19:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:19:59,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:19:59,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-09 01:19:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:19:59,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-09 01:19:59,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:00,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-09 01:20:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:00,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:00,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:20:00,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2022-02-09 01:20:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:01,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477296005] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:01,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:01,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 17] total 38 [2022-02-09 01:20:01,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834651533] [2022-02-09 01:20:01,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:01,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-09 01:20:01,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-09 01:20:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 01:20:01,725 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:02,379 INFO L93 Difference]: Finished difference Result 2997 states and 7951 transitions. [2022-02-09 01:20:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-09 01:20:02,379 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-02-09 01:20:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:02,387 INFO L225 Difference]: With dead ends: 2997 [2022-02-09 01:20:02,388 INFO L226 Difference]: Without dead ends: 2067 [2022-02-09 01:20:02,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 184 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=688, Invalid=2504, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 01:20:02,389 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 1069 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:02,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1754 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 480 Invalid, 0 Unknown, 136 Unchecked, 0.2s Time] [2022-02-09 01:20:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-02-09 01:20:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1346. [2022-02-09 01:20:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 2.573977695167286) internal successors, (3462), 1345 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 3462 transitions. [2022-02-09 01:20:02,420 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 3462 transitions. Word has length 109 [2022-02-09 01:20:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:02,421 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 3462 transitions. [2022-02-09 01:20:02,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 3462 transitions. [2022-02-09 01:20:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-09 01:20:02,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:02,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:02,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:02,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:02,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 94566077, now seen corresponding path program 1 times [2022-02-09 01:20:02,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:02,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676784480] [2022-02-09 01:20:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:02,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:20:02,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:02,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676784480] [2022-02-09 01:20:02,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676784480] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:20:02,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:20:02,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 01:20:02,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265864154] [2022-02-09 01:20:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:20:02,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 01:20:02,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 01:20:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 01:20:02,686 INFO L87 Difference]: Start difference. First operand 1346 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:02,706 INFO L93 Difference]: Finished difference Result 1393 states and 3569 transitions. [2022-02-09 01:20:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 01:20:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-02-09 01:20:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:02,711 INFO L225 Difference]: With dead ends: 1393 [2022-02-09 01:20:02,711 INFO L226 Difference]: Without dead ends: 1393 [2022-02-09 01:20:02,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 01:20:02,713 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:02,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:20:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-02-09 01:20:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1334. [2022-02-09 01:20:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-02-09 01:20:02,738 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-02-09 01:20:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:02,738 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-02-09 01:20:02,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-02-09 01:20:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-09 01:20:02,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:02,741 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:02,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-09 01:20:02,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1998461693, now seen corresponding path program 2 times [2022-02-09 01:20:02,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:02,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671555166] [2022-02-09 01:20:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:02,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-09 01:20:02,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:02,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671555166] [2022-02-09 01:20:02,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671555166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:20:02,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:20:02,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-09 01:20:02,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092938700] [2022-02-09 01:20:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:20:02,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 01:20:02,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 01:20:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 01:20:02,825 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:02,856 INFO L93 Difference]: Finished difference Result 3048 states and 7997 transitions. [2022-02-09 01:20:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 01:20:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-02-09 01:20:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:02,866 INFO L225 Difference]: With dead ends: 3048 [2022-02-09 01:20:02,866 INFO L226 Difference]: Without dead ends: 2856 [2022-02-09 01:20:02,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 01:20:02,867 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 112 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 249 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:20:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-02-09 01:20:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2218. [2022-02-09 01:20:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 2.6738836265223274) internal successors, (5928), 2217 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 5928 transitions. [2022-02-09 01:20:02,914 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 5928 transitions. Word has length 115 [2022-02-09 01:20:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 5928 transitions. [2022-02-09 01:20:02,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 5928 transitions. [2022-02-09 01:20:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-09 01:20:02,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:02,919 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:02,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-09 01:20:02,919 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1016729003, now seen corresponding path program 3 times [2022-02-09 01:20:02,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:02,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353956434] [2022-02-09 01:20:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:02,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-09 01:20:03,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:03,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353956434] [2022-02-09 01:20:03,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353956434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 01:20:03,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 01:20:03,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-09 01:20:03,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684229470] [2022-02-09 01:20:03,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 01:20:03,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 01:20:03,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 01:20:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-09 01:20:03,033 INFO L87 Difference]: Start difference. First operand 2218 states and 5928 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:03,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:03,070 INFO L93 Difference]: Finished difference Result 3561 states and 9503 transitions. [2022-02-09 01:20:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 01:20:03,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 126 [2022-02-09 01:20:03,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:03,084 INFO L225 Difference]: With dead ends: 3561 [2022-02-09 01:20:03,085 INFO L226 Difference]: Without dead ends: 3561 [2022-02-09 01:20:03,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-09 01:20:03,085 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:03,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:20:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-02-09 01:20:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3236. [2022-02-09 01:20:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 2.6884080370942813) internal successors, (8697), 3235 states have internal predecessors, (8697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 8697 transitions. [2022-02-09 01:20:03,163 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 8697 transitions. Word has length 126 [2022-02-09 01:20:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:03,163 INFO L470 AbstractCegarLoop]: Abstraction has 3236 states and 8697 transitions. [2022-02-09 01:20:03,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 8697 transitions. [2022-02-09 01:20:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-09 01:20:03,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:03,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:03,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-09 01:20:03,170 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -312311179, now seen corresponding path program 1 times [2022-02-09 01:20:03,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:03,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437062024] [2022-02-09 01:20:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:03,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-09 01:20:03,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:03,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437062024] [2022-02-09 01:20:03,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437062024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:03,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838152708] [2022-02-09 01:20:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:03,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:03,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:03,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:03,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 01:20:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-09 01:20:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-09 01:20:03,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 01:20:03,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838152708] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:03,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:03,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-02-09 01:20:03,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656045329] [2022-02-09 01:20:03,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:03,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 01:20:03,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 01:20:03,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-09 01:20:03,815 INFO L87 Difference]: Start difference. First operand 3236 states and 8697 transitions. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:03,895 INFO L93 Difference]: Finished difference Result 6621 states and 17792 transitions. [2022-02-09 01:20:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-09 01:20:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 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 126 [2022-02-09 01:20:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:03,931 INFO L225 Difference]: With dead ends: 6621 [2022-02-09 01:20:03,931 INFO L226 Difference]: Without dead ends: 6477 [2022-02-09 01:20:03,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-09 01:20:03,933 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 383 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:03,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 361 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:20:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2022-02-09 01:20:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 4096. [2022-02-09 01:20:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.7335775335775336) internal successors, (11194), 4095 states have internal predecessors, (11194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 11194 transitions. [2022-02-09 01:20:04,086 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 11194 transitions. Word has length 126 [2022-02-09 01:20:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 11194 transitions. [2022-02-09 01:20:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 11194 transitions. [2022-02-09 01:20:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-09 01:20:04,095 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:04,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:04,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:04,311 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,SelfDestructingSolverStorable8 [2022-02-09 01:20:04,311 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1286212861, now seen corresponding path program 2 times [2022-02-09 01:20:04,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:04,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438363713] [2022-02-09 01:20:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:04,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 01:20:04,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:04,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438363713] [2022-02-09 01:20:04,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438363713] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:04,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770379635] [2022-02-09 01:20:04,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:20:04,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:04,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:04,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-09 01:20:04,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:20:04,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:04,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 78 conjunts are in the unsatisfiable core [2022-02-09 01:20:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:04,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:05,195 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-09 01:20:05,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-09 01:20:05,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:20:05,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:06,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:06,867 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-02-09 01:20:06,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 22 [2022-02-09 01:20:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:06,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:11,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:20:11,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-02-09 01:20:11,101 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-09 01:20:11,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 740 [2022-02-09 01:20:11,133 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-09 01:20:11,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 664 [2022-02-09 01:20:11,167 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-09 01:20:11,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 512 [2022-02-09 01:20:14,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-09 01:20:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:14,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770379635] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:14,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:14,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 33, 31] total 65 [2022-02-09 01:20:14,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313459967] [2022-02-09 01:20:14,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:14,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-09 01:20:14,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:14,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-09 01:20:14,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=3563, Unknown=63, NotChecked=0, Total=4160 [2022-02-09 01:20:14,285 INFO L87 Difference]: Start difference. First operand 4096 states and 11194 transitions. Second operand has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:18,655 INFO L93 Difference]: Finished difference Result 12078 states and 32474 transitions. [2022-02-09 01:20:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-09 01:20:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-02-09 01:20:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:18,683 INFO L225 Difference]: With dead ends: 12078 [2022-02-09 01:20:18,683 INFO L226 Difference]: Without dead ends: 11002 [2022-02-09 01:20:18,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 221 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4629 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2066, Invalid=14383, Unknown=63, NotChecked=0, Total=16512 [2022-02-09 01:20:18,686 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2581 mSDsluCounter, 6399 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1221 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:18,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 6298 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1109 Invalid, 0 Unknown, 1221 Unchecked, 0.6s Time] [2022-02-09 01:20:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2022-02-09 01:20:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 5965. [2022-02-09 01:20:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5965 states, 5964 states have (on average 2.7414486921529173) internal successors, (16350), 5964 states have internal predecessors, (16350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 16350 transitions. [2022-02-09 01:20:18,869 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 16350 transitions. Word has length 130 [2022-02-09 01:20:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 5965 states and 16350 transitions. [2022-02-09 01:20:18,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 16350 transitions. [2022-02-09 01:20:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-09 01:20:18,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:18,881 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:18,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:19,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:19,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:19,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1805394603, now seen corresponding path program 3 times [2022-02-09 01:20:19,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:19,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680294915] [2022-02-09 01:20:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:19,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:20,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:20,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680294915] [2022-02-09 01:20:20,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680294915] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:20,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106064363] [2022-02-09 01:20:20,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:20:20,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:20,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 01:20:20,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 01:20:20,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:20,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-09 01:20:20,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:21,304 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-09 01:20:21,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2022-02-09 01:20:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:20:21,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:21,643 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-09 01:20:21,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-02-09 01:20:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 01:20:22,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106064363] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:22,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:22,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12, 9] total 41 [2022-02-09 01:20:22,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740548897] [2022-02-09 01:20:22,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:22,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:20:22,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:20:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:20:22,179 INFO L87 Difference]: Start difference. First operand 5965 states and 16350 transitions. Second operand has 41 states, 41 states have (on average 7.829268292682927) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:35,245 INFO L93 Difference]: Finished difference Result 27282 states and 74934 transitions. [2022-02-09 01:20:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-02-09 01:20:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.829268292682927) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-02-09 01:20:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:35,303 INFO L225 Difference]: With dead ends: 27282 [2022-02-09 01:20:35,303 INFO L226 Difference]: Without dead ends: 21102 [2022-02-09 01:20:35,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 248 SyntacticMatches, 3 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12760 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=3996, Invalid=31160, Unknown=0, NotChecked=0, Total=35156 [2022-02-09 01:20:35,310 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 3820 mSDsluCounter, 9045 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 8657 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:35,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3820 Valid, 8657 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-09 01:20:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21102 states. [2022-02-09 01:20:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21102 to 9286. [2022-02-09 01:20:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9286 states, 9285 states have (on average 2.7792137856758212) internal successors, (25805), 9285 states have internal predecessors, (25805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9286 states to 9286 states and 25805 transitions. [2022-02-09 01:20:35,611 INFO L78 Accepts]: Start accepts. Automaton has 9286 states and 25805 transitions. Word has length 130 [2022-02-09 01:20:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:35,612 INFO L470 AbstractCegarLoop]: Abstraction has 9286 states and 25805 transitions. [2022-02-09 01:20:35,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.829268292682927) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9286 states and 25805 transitions. [2022-02-09 01:20:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-09 01:20:35,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:35,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:35,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:35,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:35,835 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:35,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -185041979, now seen corresponding path program 4 times [2022-02-09 01:20:35,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:35,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782112807] [2022-02-09 01:20:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:35,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:36,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:36,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782112807] [2022-02-09 01:20:36,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782112807] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:36,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007727993] [2022-02-09 01:20:36,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:20:36,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:36,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:36,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:36,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 01:20:36,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:20:36,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 79 conjunts are in the unsatisfiable core [2022-02-09 01:20:36,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:36,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:36,915 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-09 01:20:36,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-09 01:20:37,485 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-09 01:20:37,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-09 01:20:37,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:20:38,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:38,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:38,980 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-09 01:20:38,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 19 [2022-02-09 01:20:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:39,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:20:42,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:20:42,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-02-09 01:20:42,905 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:20:42,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 752 [2022-02-09 01:20:42,943 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:20:42,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 676 [2022-02-09 01:20:43,007 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:20:43,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 524 [2022-02-09 01:20:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:49,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007727993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:20:49,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:20:49,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 32] total 81 [2022-02-09 01:20:49,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023681691] [2022-02-09 01:20:49,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:20:49,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-09 01:20:49,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:20:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-09 01:20:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=5529, Unknown=60, NotChecked=0, Total=6480 [2022-02-09 01:20:49,103 INFO L87 Difference]: Start difference. First operand 9286 states and 25805 transitions. Second operand has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:20:53,593 INFO L93 Difference]: Finished difference Result 16253 states and 45092 transitions. [2022-02-09 01:20:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-09 01:20:53,594 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-02-09 01:20:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:20:53,625 INFO L225 Difference]: With dead ends: 16253 [2022-02-09 01:20:53,625 INFO L226 Difference]: Without dead ends: 16052 [2022-02-09 01:20:53,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 217 SyntacticMatches, 10 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2448, Invalid=14784, Unknown=60, NotChecked=0, Total=17292 [2022-02-09 01:20:53,628 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 2743 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1121 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 01:20:53,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2743 Valid, 4554 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1108 Invalid, 0 Unknown, 1121 Unchecked, 0.6s Time] [2022-02-09 01:20:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16052 states. [2022-02-09 01:20:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16052 to 9508. [2022-02-09 01:20:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9507 states have (on average 2.7796360576417376) internal successors, (26426), 9507 states have internal predecessors, (26426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 26426 transitions. [2022-02-09 01:20:53,832 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 26426 transitions. Word has length 130 [2022-02-09 01:20:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:20:53,832 INFO L470 AbstractCegarLoop]: Abstraction has 9508 states and 26426 transitions. [2022-02-09 01:20:53,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.209876543209877) internal successors, (341), 81 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:20:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 26426 transitions. [2022-02-09 01:20:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-09 01:20:53,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:20:53,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:20:53,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-09 01:20:54,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-09 01:20:54,063 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:20:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:20:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash -408975929, now seen corresponding path program 5 times [2022-02-09 01:20:54,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:20:54,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881385382] [2022-02-09 01:20:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:20:54,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:20:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:20:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:54,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:20:54,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881385382] [2022-02-09 01:20:54,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881385382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:20:54,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015654405] [2022-02-09 01:20:54,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:20:54,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:20:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:20:54,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:20:54,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-09 01:20:54,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 01:20:54,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:20:54,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 69 conjunts are in the unsatisfiable core [2022-02-09 01:20:54,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:20:54,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:55,298 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-09 01:20:55,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-09 01:20:55,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:20:55,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:56,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:20:56,850 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-09 01:20:56,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 17 [2022-02-09 01:20:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:20:56,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:00,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:21:00,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-02-09 01:21:00,535 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:21:00,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 752 [2022-02-09 01:21:00,570 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:21:00,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 600 [2022-02-09 01:21:00,606 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-09 01:21:00,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 548 treesize of output 524 [2022-02-09 01:21:03,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-09 01:21:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:03,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015654405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:03,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:03,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32, 31] total 80 [2022-02-09 01:21:03,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656746573] [2022-02-09 01:21:03,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:03,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-09 01:21:03,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-09 01:21:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=5645, Unknown=44, NotChecked=0, Total=6320 [2022-02-09 01:21:03,738 INFO L87 Difference]: Start difference. First operand 9508 states and 26426 transitions. Second operand has 80 states, 80 states have (on average 4.2625) internal successors, (341), 80 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:11,602 INFO L93 Difference]: Finished difference Result 12638 states and 34740 transitions. [2022-02-09 01:21:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-09 01:21:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.2625) internal successors, (341), 80 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-02-09 01:21:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:11,624 INFO L225 Difference]: With dead ends: 12638 [2022-02-09 01:21:11,624 INFO L226 Difference]: Without dead ends: 11984 [2022-02-09 01:21:11,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5756 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2627, Invalid=17351, Unknown=44, NotChecked=0, Total=20022 [2022-02-09 01:21:11,625 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 3043 mSDsluCounter, 7500 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 7497 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1347 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:11,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3043 Valid, 7497 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1965 Invalid, 0 Unknown, 1347 Unchecked, 1.0s Time] [2022-02-09 01:21:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11984 states. [2022-02-09 01:21:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11984 to 8833. [2022-02-09 01:21:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 8832 states have (on average 2.76268115942029) internal successors, (24400), 8832 states have internal predecessors, (24400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 24400 transitions. [2022-02-09 01:21:11,806 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 24400 transitions. Word has length 130 [2022-02-09 01:21:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:11,806 INFO L470 AbstractCegarLoop]: Abstraction has 8833 states and 24400 transitions. [2022-02-09 01:21:11,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.2625) internal successors, (341), 80 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 24400 transitions. [2022-02-09 01:21:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-09 01:21:11,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:11,817 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:11,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:12,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:12,032 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -810578241, now seen corresponding path program 6 times [2022-02-09 01:21:12,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:12,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116593640] [2022-02-09 01:21:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 01:21:12,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:12,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116593640] [2022-02-09 01:21:12,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116593640] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:12,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886857602] [2022-02-09 01:21:12,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:21:12,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:12,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:12,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:12,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-09 01:21:12,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:21:12,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:12,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-09 01:21:12,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:13,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886857602] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:13,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:13,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-02-09 01:21:13,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074112804] [2022-02-09 01:21:13,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:13,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-09 01:21:13,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:13,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-09 01:21:13,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2022-02-09 01:21:13,408 INFO L87 Difference]: Start difference. First operand 8833 states and 24400 transitions. Second operand has 35 states, 35 states have (on average 8.542857142857143) internal successors, (299), 35 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:14,262 INFO L93 Difference]: Finished difference Result 6021 states and 16060 transitions. [2022-02-09 01:21:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 01:21:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.542857142857143) internal successors, (299), 35 states have internal predecessors, (299), 0 states have call successors, (0), 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 137 [2022-02-09 01:21:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:14,270 INFO L225 Difference]: With dead ends: 6021 [2022-02-09 01:21:14,270 INFO L226 Difference]: Without dead ends: 4682 [2022-02-09 01:21:14,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=935, Invalid=2847, Unknown=0, NotChecked=0, Total=3782 [2022-02-09 01:21:14,271 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1051 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:14,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2107 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 01:21:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-02-09 01:21:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4359. [2022-02-09 01:21:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.6991739329967874) internal successors, (11763), 4358 states have internal predecessors, (11763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 11763 transitions. [2022-02-09 01:21:14,329 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 11763 transitions. Word has length 137 [2022-02-09 01:21:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:14,329 INFO L470 AbstractCegarLoop]: Abstraction has 4359 states and 11763 transitions. [2022-02-09 01:21:14,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.542857142857143) internal successors, (299), 35 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 11763 transitions. [2022-02-09 01:21:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-09 01:21:14,335 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:14,335 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:14,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-09 01:21:14,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:14,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash -950410362, now seen corresponding path program 7 times [2022-02-09 01:21:14,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:14,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325689105] [2022-02-09 01:21:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:14,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:16,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:16,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325689105] [2022-02-09 01:21:16,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325689105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:16,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958029820] [2022-02-09 01:21:16,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:21:16,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:16,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:16,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:16,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-09 01:21:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:16,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 82 conjunts are in the unsatisfiable core [2022-02-09 01:21:16,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:17,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:21:18,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:21:18,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:21:18,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:21:19,155 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-09 01:21:19,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-02-09 01:21:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:19,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:22,101 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-09 01:21:22,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 138 [2022-02-09 01:21:22,137 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-09 01:21:22,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-02-09 01:21:22,174 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-09 01:21:22,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 602 [2022-02-09 01:21:22,212 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-09 01:21:22,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 524 [2022-02-09 01:21:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:24,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958029820] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:24,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:24,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 32] total 87 [2022-02-09 01:21:24,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813021732] [2022-02-09 01:21:24,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:24,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-09 01:21:24,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-09 01:21:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=6367, Unknown=77, NotChecked=0, Total=7482 [2022-02-09 01:21:24,742 INFO L87 Difference]: Start difference. First operand 4359 states and 11763 transitions. Second operand has 87 states, 87 states have (on average 4.057471264367816) internal successors, (353), 87 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:33,162 INFO L93 Difference]: Finished difference Result 17964 states and 48672 transitions. [2022-02-09 01:21:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-09 01:21:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.057471264367816) internal successors, (353), 87 states have internal predecessors, (353), 0 states have call successors, (0), 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 137 [2022-02-09 01:21:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:33,187 INFO L225 Difference]: With dead ends: 17964 [2022-02-09 01:21:33,188 INFO L226 Difference]: Without dead ends: 13506 [2022-02-09 01:21:33,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 213 SyntacticMatches, 8 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8728 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=3623, Invalid=24692, Unknown=77, NotChecked=0, Total=28392 [2022-02-09 01:21:33,189 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 3122 mSDsluCounter, 11770 mSDsCounter, 0 mSdLazyCounter, 3880 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3122 SdHoareTripleChecker+Valid, 11644 SdHoareTripleChecker+Invalid, 5226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1200 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:33,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3122 Valid, 11644 Invalid, 5226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 3880 Invalid, 0 Unknown, 1200 Unchecked, 1.9s Time] [2022-02-09 01:21:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2022-02-09 01:21:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 5587. [2022-02-09 01:21:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 2.704439670605084) internal successors, (15107), 5586 states have internal predecessors, (15107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 15107 transitions. [2022-02-09 01:21:33,326 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 15107 transitions. Word has length 137 [2022-02-09 01:21:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:33,326 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 15107 transitions. [2022-02-09 01:21:33,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.057471264367816) internal successors, (353), 87 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 15107 transitions. [2022-02-09 01:21:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-02-09 01:21:33,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:33,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:33,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:33,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-09 01:21:33,558 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:33,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1025536086, now seen corresponding path program 8 times [2022-02-09 01:21:33,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:33,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831147502] [2022-02-09 01:21:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:33,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:21:33,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:33,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831147502] [2022-02-09 01:21:33,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831147502] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:33,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806580297] [2022-02-09 01:21:33,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:21:33,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:33,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:33,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-09 01:21:33,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:21:33,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-09 01:21:33,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 11 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:34,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:35,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806580297] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:35,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:35,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 41 [2022-02-09 01:21:35,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625364653] [2022-02-09 01:21:35,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-09 01:21:35,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:35,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-09 01:21:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 01:21:35,198 INFO L87 Difference]: Start difference. First operand 5587 states and 15107 transitions. Second operand has 41 states, 41 states have (on average 8.195121951219512) internal successors, (336), 41 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:21:35,895 INFO L93 Difference]: Finished difference Result 6093 states and 16403 transitions. [2022-02-09 01:21:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 01:21:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.195121951219512) internal successors, (336), 41 states have internal predecessors, (336), 0 states have call successors, (0), 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 144 [2022-02-09 01:21:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:21:35,903 INFO L225 Difference]: With dead ends: 6093 [2022-02-09 01:21:35,903 INFO L226 Difference]: Without dead ends: 5082 [2022-02-09 01:21:35,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=789, Invalid=3371, Unknown=0, NotChecked=0, Total=4160 [2022-02-09 01:21:35,904 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1142 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 3272 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:21:35,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 3272 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:21:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-02-09 01:21:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 4770. [2022-02-09 01:21:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 2.739148668483959) internal successors, (13063), 4769 states have internal predecessors, (13063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 13063 transitions. [2022-02-09 01:21:35,977 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 13063 transitions. Word has length 144 [2022-02-09 01:21:35,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:21:35,978 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 13063 transitions. [2022-02-09 01:21:35,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.195121951219512) internal successors, (336), 41 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:21:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 13063 transitions. [2022-02-09 01:21:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:21:35,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:21:35,985 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:21:36,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-09 01:21:36,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-09 01:21:36,196 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:21:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:21:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1120624095, now seen corresponding path program 9 times [2022-02-09 01:21:36,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:21:36,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781070558] [2022-02-09 01:21:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:21:36,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:21:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:21:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:37,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:21:37,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781070558] [2022-02-09 01:21:37,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781070558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:21:37,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901543468] [2022-02-09 01:21:37,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:21:37,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:21:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:21:37,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:21:37,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-09 01:21:37,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:21:37,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:21:37,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 83 conjunts are in the unsatisfiable core [2022-02-09 01:21:37,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:21:38,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:21:38,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:21:39,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:21:39,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:21:40,010 INFO L353 Elim1Store]: treesize reduction 166, result has 4.0 percent of original size [2022-02-09 01:21:40,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 24 [2022-02-09 01:21:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:40,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:21:47,187 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-09 01:21:47,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 187 [2022-02-09 01:21:47,253 INFO L353 Elim1Store]: treesize reduction 163, result has 36.3 percent of original size [2022-02-09 01:21:47,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 520 treesize of output 536 [2022-02-09 01:21:47,327 INFO L353 Elim1Store]: treesize reduction 163, result has 36.3 percent of original size [2022-02-09 01:21:47,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 444 treesize of output 420 [2022-02-09 01:21:47,401 INFO L353 Elim1Store]: treesize reduction 163, result has 36.3 percent of original size [2022-02-09 01:21:47,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 328 treesize of output 362 [2022-02-09 01:21:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:21:53,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901543468] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:21:53,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:21:53,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 30] total 85 [2022-02-09 01:21:53,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173191203] [2022-02-09 01:21:53,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:21:53,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-09 01:21:53,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:21:53,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-09 01:21:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=6330, Unknown=66, NotChecked=0, Total=7140 [2022-02-09 01:21:53,946 INFO L87 Difference]: Start difference. First operand 4770 states and 13063 transitions. Second operand has 85 states, 85 states have (on average 4.682352941176471) internal successors, (398), 85 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:22:49,455 INFO L93 Difference]: Finished difference Result 53991 states and 146610 transitions. [2022-02-09 01:22:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2022-02-09 01:22:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.682352941176471) internal successors, (398), 85 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:22:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:22:49,538 INFO L225 Difference]: With dead ends: 53991 [2022-02-09 01:22:49,538 INFO L226 Difference]: Without dead ends: 40372 [2022-02-09 01:22:49,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 265 SyntacticMatches, 44 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61356 ImplicationChecksByTransitivity, 53.2s TimeCoverageRelationStatistics Valid=16233, Invalid=122454, Unknown=69, NotChecked=0, Total=138756 [2022-02-09 01:22:49,544 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 8254 mSDsluCounter, 25792 mSDsCounter, 0 mSdLazyCounter, 6215 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8254 SdHoareTripleChecker+Valid, 24164 SdHoareTripleChecker+Invalid, 13414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 6215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6718 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:22:49,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8254 Valid, 24164 Invalid, 13414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [481 Valid, 6215 Invalid, 0 Unknown, 6718 Unchecked, 3.7s Time] [2022-02-09 01:22:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40372 states. [2022-02-09 01:22:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40372 to 19290. [2022-02-09 01:22:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19290 states, 19289 states have (on average 2.790398672818705) internal successors, (53824), 19289 states have internal predecessors, (53824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19290 states to 19290 states and 53824 transitions. [2022-02-09 01:22:50,049 INFO L78 Accepts]: Start accepts. Automaton has 19290 states and 53824 transitions. Word has length 151 [2022-02-09 01:22:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:22:50,050 INFO L470 AbstractCegarLoop]: Abstraction has 19290 states and 53824 transitions. [2022-02-09 01:22:50,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.682352941176471) internal successors, (398), 85 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:22:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 19290 states and 53824 transitions. [2022-02-09 01:22:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:22:50,064 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:22:50,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:22:50,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-09 01:22:50,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-09 01:22:50,265 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:22:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:22:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -165506841, now seen corresponding path program 10 times [2022-02-09 01:22:50,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:22:50,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337854465] [2022-02-09 01:22:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:22:50,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:22:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:22:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:51,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:22:51,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337854465] [2022-02-09 01:22:51,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337854465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:22:51,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991256915] [2022-02-09 01:22:51,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:22:51,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:22:51,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:22:51,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:22:51,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-09 01:22:51,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:22:51,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:22:51,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 92 conjunts are in the unsatisfiable core [2022-02-09 01:22:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:22:51,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:22:51,858 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-09 01:22:51,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-09 01:22:52,447 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-09 01:22:52,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-09 01:22:53,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:22:53,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:22:53,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:22:55,224 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-09 01:22:55,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 27 [2022-02-09 01:22:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:22:55,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:02,519 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:23:02,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 174 [2022-02-09 01:23:02,591 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:23:02,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1090 treesize of output 1020 [2022-02-09 01:23:02,665 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:23:02,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 938 treesize of output 904 [2022-02-09 01:23:02,760 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:23:02,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 822 treesize of output 672 [2022-02-09 01:23:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:12,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991256915] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:12,384 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:12,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 38, 37] total 98 [2022-02-09 01:23:12,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819238482] [2022-02-09 01:23:12,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:12,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-09 01:23:12,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-09 01:23:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1077, Invalid=8361, Unknown=68, NotChecked=0, Total=9506 [2022-02-09 01:23:12,386 INFO L87 Difference]: Start difference. First operand 19290 states and 53824 transitions. Second operand has 98 states, 98 states have (on average 4.122448979591836) internal successors, (404), 98 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:16,813 INFO L93 Difference]: Finished difference Result 22237 states and 61466 transitions. [2022-02-09 01:23:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-09 01:23:16,813 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.122448979591836) internal successors, (404), 98 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:23:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:16,851 INFO L225 Difference]: With dead ends: 22237 [2022-02-09 01:23:16,851 INFO L226 Difference]: Without dead ends: 22141 [2022-02-09 01:23:16,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 266 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7407 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2127, Invalid=19267, Unknown=68, NotChecked=0, Total=21462 [2022-02-09 01:23:16,853 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1664 mSDsluCounter, 7425 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 7346 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1151 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:16,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 7346 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 991 Invalid, 0 Unknown, 1151 Unchecked, 0.4s Time] [2022-02-09 01:23:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22141 states. [2022-02-09 01:23:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22141 to 19738. [2022-02-09 01:23:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19738 states, 19737 states have (on average 2.7733698130414957) internal successors, (54738), 19737 states have internal predecessors, (54738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19738 states to 19738 states and 54738 transitions. [2022-02-09 01:23:17,155 INFO L78 Accepts]: Start accepts. Automaton has 19738 states and 54738 transitions. Word has length 151 [2022-02-09 01:23:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:17,155 INFO L470 AbstractCegarLoop]: Abstraction has 19738 states and 54738 transitions. [2022-02-09 01:23:17,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.122448979591836) internal successors, (404), 98 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19738 states and 54738 transitions. [2022-02-09 01:23:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:23:17,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:17,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:17,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:17,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-09 01:23:17,370 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1571541419, now seen corresponding path program 11 times [2022-02-09 01:23:17,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:17,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554952306] [2022-02-09 01:23:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:17,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:23:17,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:17,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554952306] [2022-02-09 01:23:17,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554952306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:17,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105703584] [2022-02-09 01:23:17,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:23:17,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:17,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:17,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-09 01:23:17,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:23:17,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:17,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-09 01:23:17,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:19,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:23:19,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:23:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:23:19,408 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:23:19,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 18 [2022-02-09 01:23:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:19,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:20,171 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:23:20,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-09 01:23:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:21,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105703584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:21,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:21,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 33, 28] total 62 [2022-02-09 01:23:21,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723606094] [2022-02-09 01:23:21,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:21,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-09 01:23:21,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-09 01:23:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2992, Unknown=0, NotChecked=0, Total=3782 [2022-02-09 01:23:21,653 INFO L87 Difference]: Start difference. First operand 19738 states and 54738 transitions. Second operand has 62 states, 62 states have (on average 6.032258064516129) internal successors, (374), 62 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:23:35,936 INFO L93 Difference]: Finished difference Result 101946 states and 277208 transitions. [2022-02-09 01:23:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-02-09 01:23:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.032258064516129) internal successors, (374), 62 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:23:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:23:36,163 INFO L225 Difference]: With dead ends: 101946 [2022-02-09 01:23:36,163 INFO L226 Difference]: Without dead ends: 81859 [2022-02-09 01:23:36,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30758 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=8970, Invalid=66380, Unknown=0, NotChecked=0, Total=75350 [2022-02-09 01:23:36,166 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 5662 mSDsluCounter, 10308 mSDsCounter, 0 mSdLazyCounter, 3949 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 10063 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:23:36,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 10063 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3949 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-09 01:23:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81859 states. [2022-02-09 01:23:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81859 to 33745. [2022-02-09 01:23:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33745 states, 33744 states have (on average 2.789058795637743) internal successors, (94114), 33744 states have internal predecessors, (94114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33745 states to 33745 states and 94114 transitions. [2022-02-09 01:23:37,242 INFO L78 Accepts]: Start accepts. Automaton has 33745 states and 94114 transitions. Word has length 151 [2022-02-09 01:23:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:23:37,243 INFO L470 AbstractCegarLoop]: Abstraction has 33745 states and 94114 transitions. [2022-02-09 01:23:37,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.032258064516129) internal successors, (374), 62 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:23:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 33745 states and 94114 transitions. [2022-02-09 01:23:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:23:37,264 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:23:37,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:23:37,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-09 01:23:37,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:37,467 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:23:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:23:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -233771259, now seen corresponding path program 12 times [2022-02-09 01:23:37,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:23:37,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553789218] [2022-02-09 01:23:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:23:37,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:23:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:23:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:23:39,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:23:39,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553789218] [2022-02-09 01:23:39,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553789218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:23:39,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452227617] [2022-02-09 01:23:39,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:23:39,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:23:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:23:39,553 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:23:39,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-09 01:23:39,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 01:23:39,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:23:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 01:23:39,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:23:40,509 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-09 01:23:40,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-02-09 01:23:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:23:40,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:23:41,164 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:23:41,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-09 01:23:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:23:41,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452227617] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:23:41,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:23:41,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13, 12] total 55 [2022-02-09 01:23:41,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789322986] [2022-02-09 01:23:41,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:23:41,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 01:23:41,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:23:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 01:23:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2744, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 01:23:41,822 INFO L87 Difference]: Start difference. First operand 33745 states and 94114 transitions. Second operand has 55 states, 55 states have (on average 6.836363636363636) internal successors, (376), 55 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:22,181 INFO L93 Difference]: Finished difference Result 173845 states and 476413 transitions. [2022-02-09 01:24:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 343 states. [2022-02-09 01:24:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 6.836363636363636) internal successors, (376), 55 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:24:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:22,721 INFO L225 Difference]: With dead ends: 173845 [2022-02-09 01:24:22,721 INFO L226 Difference]: Without dead ends: 145549 [2022-02-09 01:24:22,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57867 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=10288, Invalid=133732, Unknown=0, NotChecked=0, Total=144020 [2022-02-09 01:24:22,727 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 6338 mSDsluCounter, 29053 mSDsCounter, 0 mSdLazyCounter, 11540 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 27465 SdHoareTripleChecker+Invalid, 12088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 11540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:22,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 27465 Invalid, 12088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [548 Valid, 11540 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-02-09 01:24:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145549 states. [2022-02-09 01:24:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145549 to 71074. [2022-02-09 01:24:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71074 states, 71073 states have (on average 2.797236644013901) internal successors, (198808), 71073 states have internal predecessors, (198808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71074 states to 71074 states and 198808 transitions. [2022-02-09 01:24:24,934 INFO L78 Accepts]: Start accepts. Automaton has 71074 states and 198808 transitions. Word has length 151 [2022-02-09 01:24:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:24,935 INFO L470 AbstractCegarLoop]: Abstraction has 71074 states and 198808 transitions. [2022-02-09 01:24:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 6.836363636363636) internal successors, (376), 55 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 71074 states and 198808 transitions. [2022-02-09 01:24:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:24:24,961 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:24,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:24,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:25,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-02-09 01:24:25,168 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash 42761981, now seen corresponding path program 13 times [2022-02-09 01:24:25,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:25,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706263722] [2022-02-09 01:24:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:25,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:26,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:24:26,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706263722] [2022-02-09 01:24:26,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706263722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:24:26,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748772632] [2022-02-09 01:24:26,711 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:24:26,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:24:26,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 01:24:26,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-09 01:24:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:24:26,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 93 conjunts are in the unsatisfiable core [2022-02-09 01:24:26,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:24:27,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:24:27,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:24:28,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:24:28,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:24:29,297 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-09 01:24:29,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-02-09 01:24:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:29,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:24:32,954 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-09 01:24:32,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 344 treesize of output 189 [2022-02-09 01:24:33,036 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:24:33,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1106 treesize of output 1070 [2022-02-09 01:24:33,125 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:24:33,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 950 treesize of output 950 [2022-02-09 01:24:33,228 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:24:33,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 830 treesize of output 710 [2022-02-09 01:24:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:24:44,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748772632] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:24:44,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:24:44,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 38, 35] total 94 [2022-02-09 01:24:44,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646635180] [2022-02-09 01:24:44,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:24:44,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-09 01:24:44,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:24:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-09 01:24:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1209, Invalid=7518, Unknown=15, NotChecked=0, Total=8742 [2022-02-09 01:24:44,779 INFO L87 Difference]: Start difference. First operand 71074 states and 198808 transitions. Second operand has 94 states, 94 states have (on average 4.127659574468085) internal successors, (388), 94 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:24:57,063 INFO L93 Difference]: Finished difference Result 107721 states and 300596 transitions. [2022-02-09 01:24:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-09 01:24:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.127659574468085) internal successors, (388), 94 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:24:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:24:57,339 INFO L225 Difference]: With dead ends: 107721 [2022-02-09 01:24:57,339 INFO L226 Difference]: Without dead ends: 106268 [2022-02-09 01:24:57,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 247 SyntacticMatches, 10 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9899 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3965, Invalid=27172, Unknown=15, NotChecked=0, Total=31152 [2022-02-09 01:24:57,340 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 3881 mSDsluCounter, 12391 mSDsCounter, 0 mSdLazyCounter, 3946 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 12430 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1044 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:24:57,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3881 Valid, 12430 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3946 Invalid, 0 Unknown, 1044 Unchecked, 2.0s Time] [2022-02-09 01:24:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106268 states. [2022-02-09 01:24:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106268 to 77033. [2022-02-09 01:24:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77033 states, 77032 states have (on average 2.8032765603904872) internal successors, (215942), 77032 states have internal predecessors, (215942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77033 states to 77033 states and 215942 transitions. [2022-02-09 01:24:59,201 INFO L78 Accepts]: Start accepts. Automaton has 77033 states and 215942 transitions. Word has length 151 [2022-02-09 01:24:59,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:24:59,201 INFO L470 AbstractCegarLoop]: Abstraction has 77033 states and 215942 transitions. [2022-02-09 01:24:59,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.127659574468085) internal successors, (388), 94 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:24:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 77033 states and 215942 transitions. [2022-02-09 01:24:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:24:59,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:24:59,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:24:59,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-09 01:24:59,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:24:59,450 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:24:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:24:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2021443987, now seen corresponding path program 14 times [2022-02-09 01:24:59,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:24:59,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830260483] [2022-02-09 01:24:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:24:59,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:24:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:25:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:25:00,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:25:00,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830260483] [2022-02-09 01:25:00,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830260483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:25:00,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996207201] [2022-02-09 01:25:00,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:25:00,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:25:00,952 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) [2022-02-09 01:25:00,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-09 01:25:01,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:25:01,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:25:01,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 90 conjunts are in the unsatisfiable core [2022-02-09 01:25:01,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:25:01,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:25:02,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:25:02,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:25:02,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:25:04,240 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-09 01:25:04,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 27 [2022-02-09 01:25:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:25:04,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:25:12,283 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-09 01:25:12,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 187 [2022-02-09 01:25:12,346 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:25:12,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1090 treesize of output 1020 [2022-02-09 01:25:12,416 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:25:12,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 938 treesize of output 904 [2022-02-09 01:25:12,482 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-09 01:25:12,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 822 treesize of output 672 [2022-02-09 01:25:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:25:17,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996207201] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:25:17,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:25:17,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 38, 35] total 94 [2022-02-09 01:25:17,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668358950] [2022-02-09 01:25:17,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:25:17,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-09 01:25:17,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:25:17,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-09 01:25:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=989, Invalid=7687, Unknown=66, NotChecked=0, Total=8742 [2022-02-09 01:25:17,899 INFO L87 Difference]: Start difference. First operand 77033 states and 215942 transitions. Second operand has 94 states, 94 states have (on average 4.297872340425532) internal successors, (404), 94 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:25:24,937 INFO L93 Difference]: Finished difference Result 91931 states and 255157 transitions. [2022-02-09 01:25:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-09 01:25:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.297872340425532) internal successors, (404), 94 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:25:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:25:25,156 INFO L225 Difference]: With dead ends: 91931 [2022-02-09 01:25:25,156 INFO L226 Difference]: Without dead ends: 91369 [2022-02-09 01:25:25,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 253 SyntacticMatches, 10 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9332 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3096, Invalid=24228, Unknown=66, NotChecked=0, Total=27390 [2022-02-09 01:25:25,158 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 3511 mSDsluCounter, 8300 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 8250 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2481 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:25:25,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 8250 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1622 Invalid, 0 Unknown, 2481 Unchecked, 0.8s Time] [2022-02-09 01:25:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91369 states. [2022-02-09 01:25:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91369 to 80657. [2022-02-09 01:25:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80657 states, 80656 states have (on average 2.7922411227930968) internal successors, (225211), 80656 states have internal predecessors, (225211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80657 states to 80657 states and 225211 transitions. [2022-02-09 01:25:27,113 INFO L78 Accepts]: Start accepts. Automaton has 80657 states and 225211 transitions. Word has length 151 [2022-02-09 01:25:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:25:27,115 INFO L470 AbstractCegarLoop]: Abstraction has 80657 states and 225211 transitions. [2022-02-09 01:25:27,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.297872340425532) internal successors, (404), 94 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 80657 states and 225211 transitions. [2022-02-09 01:25:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:25:27,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:25:27,390 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:25:27,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-09 01:25:27,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:27,591 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:25:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:25:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1081671931, now seen corresponding path program 15 times [2022-02-09 01:25:27,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:25:27,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201128029] [2022-02-09 01:25:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:25:27,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:25:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:25:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:25:27,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:25:27,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201128029] [2022-02-09 01:25:27,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201128029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:25:27,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757648842] [2022-02-09 01:25:27,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:25:27,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:27,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:25:27,777 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) [2022-02-09 01:25:27,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-09 01:25:28,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 01:25:28,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:25:28,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-09 01:25:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:25:28,944 INFO L353 Elim1Store]: treesize reduction 166, result has 4.0 percent of original size [2022-02-09 01:25:28,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 33 [2022-02-09 01:25:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-09 01:25:28,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:25:29,436 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:25:29,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-09 01:25:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:25:30,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757648842] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:25:30,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:25:30,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 27 [2022-02-09 01:25:30,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057740440] [2022-02-09 01:25:30,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:25:30,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 01:25:30,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:25:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 01:25:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2022-02-09 01:25:30,049 INFO L87 Difference]: Start difference. First operand 80657 states and 225211 transitions. Second operand has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 27 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:25:31,400 INFO L93 Difference]: Finished difference Result 114447 states and 317460 transitions. [2022-02-09 01:25:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 01:25:31,403 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 27 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:25:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:25:31,801 INFO L225 Difference]: With dead ends: 114447 [2022-02-09 01:25:31,801 INFO L226 Difference]: Without dead ends: 109364 [2022-02-09 01:25:31,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-02-09 01:25:31,802 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1034 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:25:31,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 3436 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 738 Invalid, 0 Unknown, 337 Unchecked, 0.3s Time] [2022-02-09 01:25:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109364 states. [2022-02-09 01:25:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109364 to 86610. [2022-02-09 01:25:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86610 states, 86609 states have (on average 2.79615282476417) internal successors, (242172), 86609 states have internal predecessors, (242172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86610 states to 86610 states and 242172 transitions. [2022-02-09 01:25:34,323 INFO L78 Accepts]: Start accepts. Automaton has 86610 states and 242172 transitions. Word has length 151 [2022-02-09 01:25:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:25:34,323 INFO L470 AbstractCegarLoop]: Abstraction has 86610 states and 242172 transitions. [2022-02-09 01:25:34,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.185185185185185) internal successors, (302), 27 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 86610 states and 242172 transitions. [2022-02-09 01:25:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-09 01:25:34,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:25:34,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:25:34,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-09 01:25:34,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-09 01:25:34,801 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:25:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:25:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1345641221, now seen corresponding path program 16 times [2022-02-09 01:25:34,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:25:34,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661456744] [2022-02-09 01:25:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:25:34,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:25:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:25:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:25:35,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:25:35,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661456744] [2022-02-09 01:25:35,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661456744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:25:35,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560985642] [2022-02-09 01:25:35,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:25:35,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:35,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:25:35,003 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) [2022-02-09 01:25:35,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-09 01:25:35,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:25:35,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:25:35,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-09 01:25:35,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:25:37,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-09 01:25:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:25:37,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-09 01:25:37,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-09 01:25:37,232 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:25:37,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 27 [2022-02-09 01:25:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 19 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:25:37,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:25:38,167 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-02-09 01:25:38,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 152 [2022-02-09 01:25:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:25:40,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560985642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:25:40,979 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:25:40,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34, 28] total 65 [2022-02-09 01:25:40,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741148392] [2022-02-09 01:25:40,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:25:40,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-09 01:25:40,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:25:40,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-09 01:25:40,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-02-09 01:25:40,981 INFO L87 Difference]: Start difference. First operand 86610 states and 242172 transitions. Second operand has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:25:51,304 INFO L93 Difference]: Finished difference Result 212022 states and 579729 transitions. [2022-02-09 01:25:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-09 01:25:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-02-09 01:25:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:25:52,079 INFO L225 Difference]: With dead ends: 212022 [2022-02-09 01:25:52,079 INFO L226 Difference]: Without dead ends: 206244 [2022-02-09 01:25:52,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 263 SyntacticMatches, 8 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10209 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3962, Invalid=25794, Unknown=0, NotChecked=0, Total=29756 [2022-02-09 01:25:52,081 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 4096 mSDsluCounter, 12062 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 11821 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1669 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:25:52,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4096 Valid, 11821 Invalid, 5215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 3286 Invalid, 0 Unknown, 1669 Unchecked, 1.7s Time] [2022-02-09 01:25:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206244 states. [2022-02-09 01:25:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206244 to 154699. [2022-02-09 01:25:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154699 states, 154698 states have (on average 2.7661120376475457) internal successors, (427912), 154698 states have internal predecessors, (427912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154699 states to 154699 states and 427912 transitions. [2022-02-09 01:25:56,992 INFO L78 Accepts]: Start accepts. Automaton has 154699 states and 427912 transitions. Word has length 151 [2022-02-09 01:25:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:25:56,993 INFO L470 AbstractCegarLoop]: Abstraction has 154699 states and 427912 transitions. [2022-02-09 01:25:56,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 154699 states and 427912 transitions. [2022-02-09 01:25:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-09 01:25:57,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:25:57,232 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:25:57,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-09 01:25:57,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:57,437 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:25:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:25:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1211464578, now seen corresponding path program 17 times [2022-02-09 01:25:57,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:25:57,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720114682] [2022-02-09 01:25:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:25:57,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:25:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:25:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-09 01:25:57,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:25:57,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720114682] [2022-02-09 01:25:57,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720114682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:25:57,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390630983] [2022-02-09 01:25:57,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:25:57,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:25:57,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:25:57,490 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) [2022-02-09 01:25:57,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-09 01:25:57,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 01:25:57,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:25:57,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-09 01:25:57,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:25:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-09 01:25:57,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:25:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 47 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-09 01:25:58,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390630983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:25:58,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:25:58,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 9] total 13 [2022-02-09 01:25:58,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610562833] [2022-02-09 01:25:58,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:25:58,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-09 01:25:58,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:25:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-09 01:25:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-02-09 01:25:58,309 INFO L87 Difference]: Start difference. First operand 154699 states and 427912 transitions. Second operand has 13 states, 13 states have (on average 18.076923076923077) internal successors, (235), 13 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:25:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:25:59,718 INFO L93 Difference]: Finished difference Result 236895 states and 653431 transitions. [2022-02-09 01:25:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-09 01:25:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.076923076923077) internal successors, (235), 13 states have internal predecessors, (235), 0 states have call successors, (0), 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 154 [2022-02-09 01:25:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:26:00,659 INFO L225 Difference]: With dead ends: 236895 [2022-02-09 01:26:00,660 INFO L226 Difference]: Without dead ends: 236367 [2022-02-09 01:26:00,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-02-09 01:26:00,661 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 621 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 01:26:00,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 429 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 01:26:00,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236367 states. [2022-02-09 01:26:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236367 to 193787. [2022-02-09 01:26:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193787 states, 193786 states have (on average 2.7712734666074947) internal successors, (537034), 193786 states have internal predecessors, (537034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193787 states to 193787 states and 537034 transitions. [2022-02-09 01:26:07,143 INFO L78 Accepts]: Start accepts. Automaton has 193787 states and 537034 transitions. Word has length 154 [2022-02-09 01:26:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:26:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 193787 states and 537034 transitions. [2022-02-09 01:26:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.076923076923077) internal successors, (235), 13 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 193787 states and 537034 transitions. [2022-02-09 01:26:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-02-09 01:26:07,228 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:26:07,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:26:07,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-09 01:26:07,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:07,446 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:26:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:26:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1138065931, now seen corresponding path program 18 times [2022-02-09 01:26:07,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:26:07,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868199426] [2022-02-09 01:26:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:26:07,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:26:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 47 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:07,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:26:07,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868199426] [2022-02-09 01:26:07,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868199426] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:26:07,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931115045] [2022-02-09 01:26:07,656 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:26:07,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:07,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:26:07,660 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) [2022-02-09 01:26:07,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-09 01:26:07,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-09 01:26:07,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:26:07,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-09 01:26:07,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:26:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:08,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:26:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 47 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:09,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931115045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:26:09,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:26:09,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2022-02-09 01:26:09,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551497281] [2022-02-09 01:26:09,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:26:09,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-09 01:26:09,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:26:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-09 01:26:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2004, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 01:26:09,159 INFO L87 Difference]: Start difference. First operand 193787 states and 537034 transitions. Second operand has 49 states, 49 states have (on average 6.26530612244898) internal successors, (307), 49 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:26:10,213 INFO L93 Difference]: Finished difference Result 16357 states and 44776 transitions. [2022-02-09 01:26:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 01:26:10,213 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.26530612244898) internal successors, (307), 49 states have internal predecessors, (307), 0 states have call successors, (0), 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 162 [2022-02-09 01:26:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:26:10,234 INFO L225 Difference]: With dead ends: 16357 [2022-02-09 01:26:10,234 INFO L226 Difference]: Without dead ends: 12474 [2022-02-09 01:26:10,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1130, Invalid=4722, Unknown=0, NotChecked=0, Total=5852 [2022-02-09 01:26:10,235 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 829 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:26:10,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2838 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 01:26:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12474 states. [2022-02-09 01:26:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 12469. [2022-02-09 01:26:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12469 states, 12468 states have (on average 2.8320500481231954) internal successors, (35310), 12468 states have internal predecessors, (35310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12469 states to 12469 states and 35310 transitions. [2022-02-09 01:26:10,421 INFO L78 Accepts]: Start accepts. Automaton has 12469 states and 35310 transitions. Word has length 162 [2022-02-09 01:26:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:26:10,421 INFO L470 AbstractCegarLoop]: Abstraction has 12469 states and 35310 transitions. [2022-02-09 01:26:10,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.26530612244898) internal successors, (307), 49 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12469 states and 35310 transitions. [2022-02-09 01:26:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-09 01:26:10,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:26:10,434 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:26:10,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-09 01:26:10,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:10,634 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:26:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:26:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1993646518, now seen corresponding path program 19 times [2022-02-09 01:26:10,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:26:10,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437170678] [2022-02-09 01:26:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:26:10,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:26:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:26:10,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:26:10,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437170678] [2022-02-09 01:26:10,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437170678] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:26:10,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040701229] [2022-02-09 01:26:10,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:26:10,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:10,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:26:10,800 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) [2022-02-09 01:26:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-09 01:26:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:10,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 82 conjunts are in the unsatisfiable core [2022-02-09 01:26:10,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:26:12,767 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-09 01:26:12,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-02-09 01:26:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:12,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:26:13,619 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-02-09 01:26:13,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 110 [2022-02-09 01:26:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:15,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040701229] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:26:15,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:26:15,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 30] total 62 [2022-02-09 01:26:15,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003642340] [2022-02-09 01:26:15,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:26:15,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-09 01:26:15,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:26:15,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-09 01:26:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782 [2022-02-09 01:26:15,505 INFO L87 Difference]: Start difference. First operand 12469 states and 35310 transitions. Second operand has 62 states, 62 states have (on average 6.790322580645161) internal successors, (421), 62 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:26:27,143 INFO L93 Difference]: Finished difference Result 73668 states and 203797 transitions. [2022-02-09 01:26:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-02-09 01:26:27,143 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.790322580645161) internal successors, (421), 62 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-02-09 01:26:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:26:27,280 INFO L225 Difference]: With dead ends: 73668 [2022-02-09 01:26:27,281 INFO L226 Difference]: Without dead ends: 55728 [2022-02-09 01:26:27,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23063 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=7376, Invalid=53386, Unknown=0, NotChecked=0, Total=60762 [2022-02-09 01:26:27,284 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 7086 mSDsluCounter, 10006 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7086 SdHoareTripleChecker+Valid, 9702 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-09 01:26:27,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7086 Valid, 9702 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-09 01:26:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55728 states. [2022-02-09 01:26:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55728 to 18818. [2022-02-09 01:26:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18818 states, 18817 states have (on average 2.8085242068342455) internal successors, (52848), 18817 states have internal predecessors, (52848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18818 states to 18818 states and 52848 transitions. [2022-02-09 01:26:27,950 INFO L78 Accepts]: Start accepts. Automaton has 18818 states and 52848 transitions. Word has length 169 [2022-02-09 01:26:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:26:27,950 INFO L470 AbstractCegarLoop]: Abstraction has 18818 states and 52848 transitions. [2022-02-09 01:26:27,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.790322580645161) internal successors, (421), 62 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18818 states and 52848 transitions. [2022-02-09 01:26:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-09 01:26:27,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:26:27,974 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:26:27,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-09 01:26:28,175 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,SelfDestructingSolverStorable26 [2022-02-09 01:26:28,175 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:26:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:26:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1384921546, now seen corresponding path program 20 times [2022-02-09 01:26:28,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:26:28,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126393189] [2022-02-09 01:26:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:26:28,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:26:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:29,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:26:29,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126393189] [2022-02-09 01:26:29,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126393189] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:26:29,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437064247] [2022-02-09 01:26:29,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:26:29,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:29,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:26:29,004 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) [2022-02-09 01:26:29,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-09 01:26:29,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:26:29,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:26:29,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 82 conjunts are in the unsatisfiable core [2022-02-09 01:26:29,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:26:31,130 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-09 01:26:31,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-02-09 01:26:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:31,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:26:32,073 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-09 01:26:32,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-09 01:26:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:34,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437064247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:26:34,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:26:34,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 33] total 88 [2022-02-09 01:26:34,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621983804] [2022-02-09 01:26:34,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:26:34,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-09 01:26:34,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:26:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-09 01:26:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1365, Invalid=6291, Unknown=0, NotChecked=0, Total=7656 [2022-02-09 01:26:34,048 INFO L87 Difference]: Start difference. First operand 18818 states and 52848 transitions. Second operand has 88 states, 88 states have (on average 5.045454545454546) internal successors, (444), 88 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:26:45,940 INFO L93 Difference]: Finished difference Result 64231 states and 177945 transitions. [2022-02-09 01:26:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-02-09 01:26:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 5.045454545454546) internal successors, (444), 88 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-02-09 01:26:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:26:46,064 INFO L225 Difference]: With dead ends: 64231 [2022-02-09 01:26:46,064 INFO L226 Difference]: Without dead ends: 57438 [2022-02-09 01:26:46,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18860 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=6832, Invalid=44470, Unknown=0, NotChecked=0, Total=51302 [2022-02-09 01:26:46,067 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 5091 mSDsluCounter, 16915 mSDsCounter, 0 mSdLazyCounter, 6990 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 16268 SdHoareTripleChecker+Invalid, 7476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 6990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:26:46,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 16268 Invalid, 7476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 6990 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-09 01:26:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57438 states. [2022-02-09 01:26:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57438 to 31995. [2022-02-09 01:26:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31995 states, 31994 states have (on average 2.8361880352566105) internal successors, (90741), 31994 states have internal predecessors, (90741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31995 states to 31995 states and 90741 transitions. [2022-02-09 01:26:46,995 INFO L78 Accepts]: Start accepts. Automaton has 31995 states and 90741 transitions. Word has length 169 [2022-02-09 01:26:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:26:46,995 INFO L470 AbstractCegarLoop]: Abstraction has 31995 states and 90741 transitions. [2022-02-09 01:26:46,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 5.045454545454546) internal successors, (444), 88 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 31995 states and 90741 transitions. [2022-02-09 01:26:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:26:47,037 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:26:47,037 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:26:47,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-09 01:26:47,244 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,SelfDestructingSolverStorable27 [2022-02-09 01:26:47,245 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:26:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:26:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1907672283, now seen corresponding path program 21 times [2022-02-09 01:26:47,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:26:47,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983700242] [2022-02-09 01:26:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:26:47,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:26:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:26:47,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:26:47,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983700242] [2022-02-09 01:26:47,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983700242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:26:47,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037894264] [2022-02-09 01:26:47,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 01:26:47,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:26:47,474 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) [2022-02-09 01:26:47,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-09 01:26:47,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-09 01:26:47,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:26:47,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 60 conjunts are in the unsatisfiable core [2022-02-09 01:26:47,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:26:49,232 INFO L353 Elim1Store]: treesize reduction 357, result has 2.7 percent of original size [2022-02-09 01:26:49,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 96 treesize of output 35 [2022-02-09 01:26:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-09 01:26:49,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:26:50,002 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-02-09 01:26:50,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-02-09 01:26:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:26:50,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037894264] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:26:50,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:26:50,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 31 [2022-02-09 01:26:50,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684679676] [2022-02-09 01:26:50,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:26:50,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-09 01:26:50,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:26:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-09 01:26:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2022-02-09 01:26:50,947 INFO L87 Difference]: Start difference. First operand 31995 states and 90741 transitions. Second operand has 31 states, 31 states have (on average 11.64516129032258) internal successors, (361), 31 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:26:53,495 INFO L93 Difference]: Finished difference Result 64678 states and 181606 transitions. [2022-02-09 01:26:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-09 01:26:53,495 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.64516129032258) internal successors, (361), 31 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-02-09 01:26:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:26:53,622 INFO L225 Difference]: With dead ends: 64678 [2022-02-09 01:26:53,622 INFO L226 Difference]: Without dead ends: 55556 [2022-02-09 01:26:53,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 324 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1136, Invalid=6874, Unknown=0, NotChecked=0, Total=8010 [2022-02-09 01:26:53,624 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1399 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 4729 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:26:53,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 4729 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1403 Invalid, 0 Unknown, 212 Unchecked, 0.8s Time] [2022-02-09 01:26:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55556 states. [2022-02-09 01:26:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55556 to 27841. [2022-02-09 01:26:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 27840 states have (on average 2.8373922413793102) internal successors, (78993), 27840 states have internal predecessors, (78993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 78993 transitions. [2022-02-09 01:26:54,446 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 78993 transitions. Word has length 172 [2022-02-09 01:26:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:26:54,446 INFO L470 AbstractCegarLoop]: Abstraction has 27841 states and 78993 transitions. [2022-02-09 01:26:54,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.64516129032258) internal successors, (361), 31 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:26:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 78993 transitions. [2022-02-09 01:26:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:26:54,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:26:54,472 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:26:54,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-09 01:26:54,673 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,SelfDestructingSolverStorable28 [2022-02-09 01:26:54,673 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:26:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:26:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1919355043, now seen corresponding path program 22 times [2022-02-09 01:26:54,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:26:54,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703751470] [2022-02-09 01:26:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:26:54,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:26:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:26:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:26:54,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:26:54,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703751470] [2022-02-09 01:26:54,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703751470] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:26:54,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637436540] [2022-02-09 01:26:54,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 01:26:54,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:26:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:26:54,911 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) [2022-02-09 01:26:54,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-09 01:26:55,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 01:26:55,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:26:55,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 86 conjunts are in the unsatisfiable core [2022-02-09 01:26:55,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:26:58,407 INFO L353 Elim1Store]: treesize reduction 457, result has 2.8 percent of original size [2022-02-09 01:26:58,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 41 [2022-02-09 01:26:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:26:58,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:26:59,954 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-02-09 01:26:59,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 178 [2022-02-09 01:27:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 3 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:27:04,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637436540] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:27:04,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:27:04,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32, 31] total 67 [2022-02-09 01:27:04,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640772789] [2022-02-09 01:27:04,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:27:04,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-09 01:27:04,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:27:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-09 01:27:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=3917, Unknown=0, NotChecked=0, Total=4422 [2022-02-09 01:27:04,173 INFO L87 Difference]: Start difference. First operand 27841 states and 78993 transitions. Second operand has 67 states, 67 states have (on average 6.522388059701493) internal successors, (437), 67 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:27:29,592 INFO L93 Difference]: Finished difference Result 102718 states and 278695 transitions. [2022-02-09 01:27:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2022-02-09 01:27:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.522388059701493) internal successors, (437), 67 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-02-09 01:27:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:27:29,976 INFO L225 Difference]: With dead ends: 102718 [2022-02-09 01:27:29,976 INFO L226 Difference]: Without dead ends: 96392 [2022-02-09 01:27:29,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 364 SyntacticMatches, 9 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31103 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=10303, Invalid=74661, Unknown=8, NotChecked=0, Total=84972 [2022-02-09 01:27:29,979 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 4448 mSDsluCounter, 21503 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 20185 SdHoareTripleChecker+Invalid, 10817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7203 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 01:27:29,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4448 Valid, 20185 Invalid, 10817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 3424 Invalid, 0 Unknown, 7203 Unchecked, 1.7s Time] [2022-02-09 01:27:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96392 states. [2022-02-09 01:27:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96392 to 57925. [2022-02-09 01:27:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57925 states, 57924 states have (on average 2.824373316759892) internal successors, (163599), 57924 states have internal predecessors, (163599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57925 states to 57925 states and 163599 transitions. [2022-02-09 01:27:31,495 INFO L78 Accepts]: Start accepts. Automaton has 57925 states and 163599 transitions. Word has length 172 [2022-02-09 01:27:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:27:31,495 INFO L470 AbstractCegarLoop]: Abstraction has 57925 states and 163599 transitions. [2022-02-09 01:27:31,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.522388059701493) internal successors, (437), 67 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 57925 states and 163599 transitions. [2022-02-09 01:27:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:27:31,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:27:31,538 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:27:31,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-09 01:27:31,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:27:31,739 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:27:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:27:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash 390461643, now seen corresponding path program 23 times [2022-02-09 01:27:31,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:27:31,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554181033] [2022-02-09 01:27:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:27:31,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:27:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:27:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:27:31,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:27:31,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554181033] [2022-02-09 01:27:31,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554181033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:27:31,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759130752] [2022-02-09 01:27:31,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 01:27:31,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:27:31,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:27:32,000 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) [2022-02-09 01:27:32,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-09 01:27:32,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-09 01:27:32,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:27:32,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-09 01:27:32,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:27:34,019 INFO L353 Elim1Store]: treesize reduction 478, result has 2.6 percent of original size [2022-02-09 01:27:34,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 36 [2022-02-09 01:27:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:27:34,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:27:35,493 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-02-09 01:27:35,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 172 [2022-02-09 01:27:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:27:38,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759130752] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:27:38,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:27:38,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28, 28] total 60 [2022-02-09 01:27:38,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234018953] [2022-02-09 01:27:38,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:27:38,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-09 01:27:38,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:27:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-09 01:27:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=2774, Unknown=0, NotChecked=0, Total=3540 [2022-02-09 01:27:38,032 INFO L87 Difference]: Start difference. First operand 57925 states and 163599 transitions. Second operand has 60 states, 60 states have (on average 7.2) internal successors, (432), 60 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:27:50,095 INFO L93 Difference]: Finished difference Result 112074 states and 306861 transitions. [2022-02-09 01:27:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-09 01:27:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.2) internal successors, (432), 60 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-02-09 01:27:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:27:50,392 INFO L225 Difference]: With dead ends: 112074 [2022-02-09 01:27:50,392 INFO L226 Difference]: Without dead ends: 108035 [2022-02-09 01:27:50,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 324 SyntacticMatches, 12 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16279 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=7042, Invalid=34778, Unknown=0, NotChecked=0, Total=41820 [2022-02-09 01:27:50,394 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 4954 mSDsluCounter, 10314 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4954 SdHoareTripleChecker+Valid, 10460 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-09 01:27:50,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4954 Valid, 10460 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2768 Invalid, 0 Unknown, 207 Unchecked, 1.8s Time] [2022-02-09 01:27:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108035 states. [2022-02-09 01:27:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108035 to 74817. [2022-02-09 01:27:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74817 states, 74816 states have (on average 2.7930121899059026) internal successors, (208962), 74816 states have internal predecessors, (208962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74817 states to 74817 states and 208962 transitions. [2022-02-09 01:27:52,332 INFO L78 Accepts]: Start accepts. Automaton has 74817 states and 208962 transitions. Word has length 172 [2022-02-09 01:27:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:27:52,332 INFO L470 AbstractCegarLoop]: Abstraction has 74817 states and 208962 transitions. [2022-02-09 01:27:52,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.2) internal successors, (432), 60 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 74817 states and 208962 transitions. [2022-02-09 01:27:52,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:27:52,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:27:52,390 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:27:52,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-09 01:27:52,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:27:52,593 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:27:52,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:27:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1592314967, now seen corresponding path program 24 times [2022-02-09 01:27:52,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:27:52,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642948707] [2022-02-09 01:27:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:27:52,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:27:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:27:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-02-09 01:27:53,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:27:53,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642948707] [2022-02-09 01:27:53,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642948707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:27:53,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693178871] [2022-02-09 01:27:53,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 01:27:53,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:27:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:27:53,108 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) [2022-02-09 01:27:53,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-09 01:27:53,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-09 01:27:53,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:27:53,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-09 01:27:53,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:27:54,451 INFO L353 Elim1Store]: treesize reduction 249, result has 2.7 percent of original size [2022-02-09 01:27:54,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 30 [2022-02-09 01:27:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 127 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 01:27:54,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:27:56,174 INFO L353 Elim1Store]: treesize reduction 351, result has 27.5 percent of original size [2022-02-09 01:27:56,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 141 treesize of output 170 [2022-02-09 01:27:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-09 01:27:57,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693178871] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:27:57,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:27:57,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 13] total 33 [2022-02-09 01:27:57,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195068565] [2022-02-09 01:27:57,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:27:57,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-09 01:27:57,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:27:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-09 01:27:57,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 01:27:57,109 INFO L87 Difference]: Start difference. First operand 74817 states and 208962 transitions. Second operand has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:27:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:27:58,676 INFO L93 Difference]: Finished difference Result 102021 states and 280926 transitions. [2022-02-09 01:27:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 01:27:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-02-09 01:27:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:27:58,899 INFO L225 Difference]: With dead ends: 102021 [2022-02-09 01:27:58,900 INFO L226 Difference]: Without dead ends: 96846 [2022-02-09 01:27:58,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 321 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=699, Invalid=3083, Unknown=0, NotChecked=0, Total=3782 [2022-02-09 01:27:58,900 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1364 mSDsluCounter, 4414 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 01:27:58,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 4551 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 707 Invalid, 0 Unknown, 539 Unchecked, 0.3s Time] [2022-02-09 01:27:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96846 states. [2022-02-09 01:28:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96846 to 77610. [2022-02-09 01:28:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77610 states, 77609 states have (on average 2.7848574263294203) internal successors, (216130), 77609 states have internal predecessors, (216130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:28:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77610 states to 77610 states and 216130 transitions. [2022-02-09 01:28:00,812 INFO L78 Accepts]: Start accepts. Automaton has 77610 states and 216130 transitions. Word has length 172 [2022-02-09 01:28:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:28:00,812 INFO L470 AbstractCegarLoop]: Abstraction has 77610 states and 216130 transitions. [2022-02-09 01:28:00,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:28:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 77610 states and 216130 transitions. [2022-02-09 01:28:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:28:00,869 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:28:00,869 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:28:00,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-09 01:28:01,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-09 01:28:01,070 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:28:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:28:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 700532987, now seen corresponding path program 25 times [2022-02-09 01:28:01,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:28:01,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753869909] [2022-02-09 01:28:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:28:01,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:28:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:28:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:28:03,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:28:03,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753869909] [2022-02-09 01:28:03,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753869909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:28:03,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439533836] [2022-02-09 01:28:03,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 01:28:03,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:28:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:28:03,117 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) [2022-02-09 01:28:03,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-09 01:28:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:28:03,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 95 conjunts are in the unsatisfiable core [2022-02-09 01:28:03,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:28:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-09 01:28:06,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:28:06,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 30 [2022-02-09 01:28:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:28:06,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:28:07,846 INFO L353 Elim1Store]: treesize reduction 316, result has 35.6 percent of original size [2022-02-09 01:28:07,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 214 [2022-02-09 01:28:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:28:10,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439533836] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:28:10,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:28:10,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 37, 31] total 100 [2022-02-09 01:28:10,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990714612] [2022-02-09 01:28:10,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:28:10,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-09 01:28:10,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:28:10,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-09 01:28:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1125, Invalid=8775, Unknown=0, NotChecked=0, Total=9900 [2022-02-09 01:28:10,553 INFO L87 Difference]: Start difference. First operand 77610 states and 216130 transitions. Second operand has 100 states, 100 states have (on average 4.67) internal successors, (467), 100 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:28:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 01:28:43,075 INFO L93 Difference]: Finished difference Result 176396 states and 485512 transitions. [2022-02-09 01:28:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2022-02-09 01:28:43,075 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.67) internal successors, (467), 100 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-02-09 01:28:43,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 01:28:43,512 INFO L225 Difference]: With dead ends: 176396 [2022-02-09 01:28:43,512 INFO L226 Difference]: Without dead ends: 156308 [2022-02-09 01:28:43,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 282 SyntacticMatches, 5 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54266 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=13267, Invalid=136889, Unknown=0, NotChecked=0, Total=150156 [2022-02-09 01:28:43,519 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 5941 mSDsluCounter, 31921 mSDsCounter, 0 mSdLazyCounter, 12454 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5941 SdHoareTripleChecker+Valid, 30324 SdHoareTripleChecker+Invalid, 12810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 12454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-09 01:28:43,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5941 Valid, 30324 Invalid, 12810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 12454 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-02-09 01:28:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156308 states. [2022-02-09 01:28:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156308 to 92538. [2022-02-09 01:28:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92538 states, 92537 states have (on average 2.791823811016134) internal successors, (258347), 92537 states have internal predecessors, (258347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:28:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92538 states to 92538 states and 258347 transitions. [2022-02-09 01:28:46,397 INFO L78 Accepts]: Start accepts. Automaton has 92538 states and 258347 transitions. Word has length 172 [2022-02-09 01:28:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 01:28:46,398 INFO L470 AbstractCegarLoop]: Abstraction has 92538 states and 258347 transitions. [2022-02-09 01:28:46,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.67) internal successors, (467), 100 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 01:28:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 92538 states and 258347 transitions. [2022-02-09 01:28:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-09 01:28:46,460 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 01:28:46,460 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 01:28:46,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-09 01:28:46,660 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,SelfDestructingSolverStorable32 [2022-02-09 01:28:46,661 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 01:28:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 01:28:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1972707299, now seen corresponding path program 26 times [2022-02-09 01:28:46,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 01:28:46,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393949812] [2022-02-09 01:28:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 01:28:46,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 01:28:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 01:28:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:28:48,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 01:28:48,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393949812] [2022-02-09 01:28:48,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393949812] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 01:28:48,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238152806] [2022-02-09 01:28:48,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 01:28:48,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:28:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 01:28:48,813 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) [2022-02-09 01:28:48,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-09 01:28:48,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 01:28:48,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 01:28:48,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 106 conjunts are in the unsatisfiable core [2022-02-09 01:28:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 01:28:50,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-09 01:28:50,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:28:50,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-09 01:28:52,443 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-02-09 01:28:52,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 24 [2022-02-09 01:28:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:28:52,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 01:28:56,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 01:28:56,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 361 treesize of output 229 [2022-02-09 01:28:56,203 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-02-09 01:28:56,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 680 treesize of output 791 [2022-02-09 01:28:56,377 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-02-09 01:28:56,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 575 treesize of output 629 [2022-02-09 01:28:56,549 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-02-09 01:28:56,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 413 treesize of output 548 [2022-02-09 01:32:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 01:32:07,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238152806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 01:32:07,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 01:32:07,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 37] total 110 [2022-02-09 01:32:07,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865061704] [2022-02-09 01:32:07,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 01:32:07,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-09 01:32:07,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 01:32:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-09 01:32:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1876, Invalid=10042, Unknown=72, NotChecked=0, Total=11990 [2022-02-09 01:32:07,560 INFO L87 Difference]: Start difference. First operand 92538 states and 258347 transitions. Second operand has 110 states, 110 states have (on average 4.1909090909090905) internal successors, (461), 110 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-09 01:32:43,473 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-02-09 01:32:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-09 01:32:43,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 276 SyntacticMatches, 21 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19981 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=7443, Invalid=45615, Unknown=72, NotChecked=0, Total=53130 [2022-02-09 01:32:43,477 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 7178 mSDsluCounter, 13926 mSDsCounter, 0 mSdLazyCounter, 5442 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7178 SdHoareTripleChecker+Valid, 14135 SdHoareTripleChecker+Invalid, 7113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 5442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1046 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-09 01:32:43,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7178 Valid, 14135 Invalid, 7113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 5442 Invalid, 0 Unknown, 1046 Unchecked, 3.4s Time] [2022-02-09 01:32:43,484 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-09 01:32:43,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-09 01:32:43,508 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-09 01:32:43,511 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-09 01:32:43,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 01:32:43,687 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (92538states) and FLOYD_HOARE automaton (currently 129 states, 110 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 150 for 27ms.. [2022-02-09 01:32:43,689 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 01:32:43,689 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 01:32:43,693 INFO L732 BasicCegarLoop]: Path program histogram: [26, 3, 1, 1, 1, 1, 1] [2022-02-09 01:32:43,694 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 01:32:43,694 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 01:32:43,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 01:32:43 BasicIcfg [2022-02-09 01:32:43,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 01:32:43,696 INFO L158 Benchmark]: Toolchain (without parser) took 766865.28ms. Allocated memory was 186.6MB in the beginning and 7.0GB in the end (delta: 6.8GB). Free memory was 131.1MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.58ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 130.8MB in the beginning and 276.6MB in the end (delta: -145.8MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.84ms. Allocated memory is still 306.2MB. Free memory was 276.6MB in the beginning and 274.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: Boogie Preprocessor took 34.15ms. Allocated memory is still 306.2MB. Free memory was 274.6MB in the beginning and 273.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: RCFGBuilder took 496.04ms. Allocated memory is still 306.2MB. Free memory was 273.0MB in the beginning and 254.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-02-09 01:32:43,696 INFO L158 Benchmark]: TraceAbstraction took 766009.75ms. Allocated memory was 306.2MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 253.6MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-02-09 01:32:43,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.58ms. Allocated memory was 186.6MB in the beginning and 306.2MB in the end (delta: 119.5MB). Free memory was 130.8MB in the beginning and 276.6MB in the end (delta: -145.8MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.84ms. Allocated memory is still 306.2MB. Free memory was 276.6MB in the beginning and 274.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.15ms. Allocated memory is still 306.2MB. Free memory was 274.6MB in the beginning and 273.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 496.04ms. Allocated memory is still 306.2MB. Free memory was 273.0MB in the beginning and 254.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 766009.75ms. Allocated memory was 306.2MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 253.6MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (92538states) and FLOYD_HOARE automaton (currently 129 states, 110 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 150 for 27ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (92538states) and FLOYD_HOARE automaton (currently 129 states, 110 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 150 for 27ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (92538states) and FLOYD_HOARE automaton (currently 129 states, 110 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 150 for 27ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 765.9s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 26, EmptinessCheckTime: 1.4s, AutomataDifference: 328.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92802 SdHoareTripleChecker+Valid, 44.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92802 mSDsluCounter, 266638 SdHoareTripleChecker+Invalid, 38.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 27632 IncrementalHoareTripleChecker+Unchecked, 273094 mSDsCounter, 5546 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83400 IncrementalHoareTripleChecker+Invalid, 116578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5546 mSolverCounterUnsat, 9987 mSDtfsCounter, 83400 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11947 GetRequests, 7250 SyntacticMatches, 197 SemanticMatches, 4499 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 397267 ImplicationChecksByTransitivity, 316.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193787occurred in iteration=25, InterpolantAutomatonStates: 3097, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.2s AutomataMinimizationTime, 33 MinimizatonAttempts, 587043 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 390.7s InterpolantComputationTime, 8851 NumberOfCodeBlocks, 8755 NumberOfCodeBlocksAsserted, 104 NumberOfCheckSat, 12830 ConstructedInterpolants, 737 QuantifiedInterpolants, 323223 SizeOfPredicates, 845 NumberOfNonLiveVariables, 8922 ConjunctsInSsa, 1749 ConjunctsInUnsatCore, 88 InterpolantComputations, 7 PerfectInterpolantSequences, 1102/6253 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