/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:14:05,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:14:05,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:14:05,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:14:05,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:14:05,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:14:05,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:14:05,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:14:05,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:14:05,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:14:05,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:14:05,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:14:05,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:14:05,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:14:05,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:14:05,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:14:05,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:14:05,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:14:05,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:14:05,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:14:05,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:14:05,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:14:05,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:14:05,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:14:05,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:14:05,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:14:05,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:14:05,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:14:05,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:14:05,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:14:05,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:14:05,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:14:05,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:14:05,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:14:05,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:14:05,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:14:05,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:14:05,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:14:05,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:14:05,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:14:05,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:14:05,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 01:14:05,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:14:05,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:14:05,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:14:05,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:14:05,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:14:05,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:14:05,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:14:05,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:14:05,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:14:05,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:14:05,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:14:05,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:14:05,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:14:05,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:14:05,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:14:05,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:14:05,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:14:05,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:14:05,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:14:05,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:14:05,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:14:05,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:05,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:14:05,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:14:05,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:14:05,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:14:05,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:14:05,995 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:14:05,995 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:14:05,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:14:05,995 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:14:06,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:14:06,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:14:06,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:14:06,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:14:06,373 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:14:06,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-22 01:14:06,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dee82f0/a6c30568bb114942b2aeba81f7ce639b/FLAG4622a562c [2020-10-22 01:14:07,038 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:14:07,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-22 01:14:07,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dee82f0/a6c30568bb114942b2aeba81f7ce639b/FLAG4622a562c [2020-10-22 01:14:07,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dee82f0/a6c30568bb114942b2aeba81f7ce639b [2020-10-22 01:14:07,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:14:07,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:14:07,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:14:07,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:14:07,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c54694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07, skipping insertion in model container [2020-10-22 01:14:07,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:14:07,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:14:07,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:07,923 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:14:07,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:08,037 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:14:08,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08 WrapperNode [2020-10-22 01:14:08,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:08,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:08,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:14:08,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:14:08,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:08,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:14:08,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:14:08,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:14:08,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:14:08,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:14:08,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:14:08,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:14:08,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-22 01:14:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-22 01:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-22 01:14:08,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-22 01:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:14:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:14:08,200 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:14:08,540 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:14:08,540 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-22 01:14:08,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08 BoogieIcfgContainer [2020-10-22 01:14:08,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:14:08,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:14:08,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:14:08,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:14:08,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:14:07" (1/3) ... [2020-10-22 01:14:08,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e0010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (2/3) ... [2020-10-22 01:14:08,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e0010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:08, skipping insertion in model container [2020-10-22 01:14:08,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:08" (3/3) ... [2020-10-22 01:14:08,553 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-1.i [2020-10-22 01:14:08,566 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:14:08,566 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:14:08,573 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:14:08,574 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:14:08,611 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,612 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,612 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,613 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,613 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,614 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,614 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,615 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,615 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,616 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,617 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,617 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,618 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,620 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,620 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,621 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,621 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,621 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,622 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,622 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,622 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,623 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,623 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,623 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,623 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,627 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,628 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,636 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:08,639 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 01:14:08,656 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 01:14:08,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:08,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:08,679 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:08,679 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:08,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:08,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:08,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:08,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:08,694 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:08,694 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,697 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-22 01:14:08,750 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-22 01:14:08,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 01:14:08,757 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-22 01:14:08,760 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-22 01:14:10,296 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-22 01:14:10,459 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-22 01:14:10,494 INFO L131 LiptonReduction]: Checked pairs total: 1183 [2020-10-22 01:14:10,494 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-22 01:14:10,501 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-22 01:14:10,513 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-22 01:14:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-22 01:14:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 01:14:10,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:10,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 01:14:10,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash -542844556, now seen corresponding path program 1 times [2020-10-22 01:14:10,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:10,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111898677] [2020-10-22 01:14:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:10,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111898677] [2020-10-22 01:14:10,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:10,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:10,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [997010787] [2020-10-22 01:14:10,851 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:10,856 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:10,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 01:14:10,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:10,882 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:10,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:10,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:10,907 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-22 01:14:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:11,050 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-22 01:14:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:11,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-22 01:14:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:11,069 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:11,069 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 01:14:11,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 01:14:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-22 01:14:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-22 01:14:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-22 01:14:11,112 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-22 01:14:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:11,113 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-22 01:14:11,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-22 01:14:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:11,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:11,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:11,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:14:11,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:11,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1940739433, now seen corresponding path program 1 times [2020-10-22 01:14:11,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:11,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786422041] [2020-10-22 01:14:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786422041] [2020-10-22 01:14:11,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:11,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:11,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1917711406] [2020-10-22 01:14:11,209 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,210 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-22 01:14:11,214 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:11,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:11,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:11,279 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-22 01:14:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:11,336 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-22 01:14:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:11,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-22 01:14:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:11,339 INFO L225 Difference]: With dead ends: 80 [2020-10-22 01:14:11,339 INFO L226 Difference]: Without dead ends: 75 [2020-10-22 01:14:11,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-22 01:14:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-22 01:14:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 01:14:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-22 01:14:11,350 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-22 01:14:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:11,351 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-22 01:14:11,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-22 01:14:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:11,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:11,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:11,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:14:11,353 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1981941347, now seen corresponding path program 1 times [2020-10-22 01:14:11,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:11,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101552054] [2020-10-22 01:14:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101552054] [2020-10-22 01:14:11,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:11,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:14:11,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [933469542] [2020-10-22 01:14:11,426 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,427 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,429 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-22 01:14:11,429 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:11,465 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [551#(and (<= (+ ~i~0 ~j~0) 2) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:11,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:11,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:11,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:11,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:11,467 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-22 01:14:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:11,581 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-22 01:14:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:11,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-22 01:14:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:11,584 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:14:11,584 INFO L226 Difference]: Without dead ends: 77 [2020-10-22 01:14:11,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-22 01:14:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-22 01:14:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 01:14:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-22 01:14:11,594 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-22 01:14:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:11,594 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-22 01:14:11,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-22 01:14:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:11,596 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:11,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:14:11,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash -33351122, now seen corresponding path program 2 times [2020-10-22 01:14:11,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:11,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94972907] [2020-10-22 01:14:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94972907] [2020-10-22 01:14:11,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803360405] [2020-10-22 01:14:11,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:11,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:11,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:11,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:11,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:11,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:11,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:11,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-22 01:14:11,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [416243971] [2020-10-22 01:14:11,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:11,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:11,845 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-22 01:14:11,845 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:11,918 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:11,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:11,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:11,919 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-22 01:14:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:12,011 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-22 01:14:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:12,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-22 01:14:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:12,016 INFO L225 Difference]: With dead ends: 101 [2020-10-22 01:14:12,017 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 01:14:12,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:12,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 01:14:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-22 01:14:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-22 01:14:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-22 01:14:12,037 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-22 01:14:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:12,038 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-22 01:14:12,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-22 01:14:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:12,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:12,042 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:12,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1310611417, now seen corresponding path program 2 times [2020-10-22 01:14:12,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:12,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105818444] [2020-10-22 01:14:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105818444] [2020-10-22 01:14:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207411041] [2020-10-22 01:14:12,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:12,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:12,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:12,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:12,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:12,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:12,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-22 01:14:12,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1970190563] [2020-10-22 01:14:12,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:12,492 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:12,494 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 01:14:12,494 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:14,556 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:16,644 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:14:16,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1088#(and (<= (+ (* 2 ~i~0) ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0)), 1087#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:16,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:16,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:16,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:16,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:16,680 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-22 01:14:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:16,812 INFO L93 Difference]: Finished difference Result 100 states and 239 transitions. [2020-10-22 01:14:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:16,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-22 01:14:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:16,814 INFO L225 Difference]: With dead ends: 100 [2020-10-22 01:14:16,814 INFO L226 Difference]: Without dead ends: 94 [2020-10-22 01:14:16,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-22 01:14:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-22 01:14:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-22 01:14:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-22 01:14:16,823 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 9 [2020-10-22 01:14:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:16,824 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-22 01:14:16,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-22 01:14:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:16,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:16,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:17,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1043120626, now seen corresponding path program 1 times [2020-10-22 01:14:17,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552030181] [2020-10-22 01:14:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552030181] [2020-10-22 01:14:17,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:17,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:17,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [179806174] [2020-10-22 01:14:17,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:17,122 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:17,123 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:17,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:17,201 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:17,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:17,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:17,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:17,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:17,203 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-22 01:14:17,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:17,271 INFO L93 Difference]: Finished difference Result 107 states and 250 transitions. [2020-10-22 01:14:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:17,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 01:14:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:17,273 INFO L225 Difference]: With dead ends: 107 [2020-10-22 01:14:17,273 INFO L226 Difference]: Without dead ends: 102 [2020-10-22 01:14:17,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:14:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-22 01:14:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2020-10-22 01:14:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-22 01:14:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-22 01:14:17,281 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-22 01:14:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:17,282 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-22 01:14:17,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-22 01:14:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:17,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:17,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 01:14:17,284 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091796, now seen corresponding path program 2 times [2020-10-22 01:14:17,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171286922] [2020-10-22 01:14:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171286922] [2020-10-22 01:14:17,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:17,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:14:17,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1049508780] [2020-10-22 01:14:17,343 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:17,344 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:17,346 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:17,346 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:17,671 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:14:17,722 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:14:17,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:14:17,790 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1640#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:17,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:17,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:17,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:17,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:17,792 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-22 01:14:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:17,898 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2020-10-22 01:14:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:17,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:17,900 INFO L225 Difference]: With dead ends: 113 [2020-10-22 01:14:17,900 INFO L226 Difference]: Without dead ends: 108 [2020-10-22 01:14:17,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-22 01:14:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-22 01:14:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-22 01:14:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-22 01:14:17,908 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-22 01:14:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:17,909 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-22 01:14:17,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-22 01:14:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:17,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:17,910 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:17,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 01:14:17,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:17,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1033855625, now seen corresponding path program 3 times [2020-10-22 01:14:17,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:17,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739452607] [2020-10-22 01:14:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:17,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739452607] [2020-10-22 01:14:17,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755508105] [2020-10-22 01:14:17,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:18,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:18,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:18,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:18,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:18,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:18,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:18,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-22 01:14:18,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [282757812] [2020-10-22 01:14:18,125 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:18,126 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:18,128 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-22 01:14:18,128 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:23,019 WARN L193 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-22 01:14:23,676 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:14:23,691 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:23,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:23,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:23,693 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-22 01:14:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:23,802 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-22 01:14:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:23,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-22 01:14:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:23,804 INFO L225 Difference]: With dead ends: 122 [2020-10-22 01:14:23,804 INFO L226 Difference]: Without dead ends: 117 [2020-10-22 01:14:23,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-22 01:14:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-22 01:14:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-22 01:14:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-22 01:14:23,812 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-22 01:14:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:23,812 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-22 01:14:23,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-22 01:14:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:14:23,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:23,813 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:24,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:24,028 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:24,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1974220067, now seen corresponding path program 3 times [2020-10-22 01:14:24,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:24,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894992259] [2020-10-22 01:14:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:24,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894992259] [2020-10-22 01:14:24,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403680612] [2020-10-22 01:14:24,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:24,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:24,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:24,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:24,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:24,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:24,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:24,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [973601172] [2020-10-22 01:14:24,285 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:24,286 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:24,288 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 01:14:24,288 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:26,412 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:14:26,464 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2309#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0)), 2310#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 4)), 2311#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 4))] [2020-10-22 01:14:26,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:14:26,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:14:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:26,466 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-22 01:14:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:26,657 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-22 01:14:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:26,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-22 01:14:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:26,659 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:26,659 INFO L226 Difference]: Without dead ends: 115 [2020-10-22 01:14:26,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:14:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-22 01:14:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-22 01:14:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:26,666 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-22 01:14:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:26,666 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:26,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:14:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:26,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:26,668 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:26,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:26,881 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2022998328, now seen corresponding path program 3 times [2020-10-22 01:14:26,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:26,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245188566] [2020-10-22 01:14:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:26,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245188566] [2020-10-22 01:14:26,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862921126] [2020-10-22 01:14:26,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:27,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:27,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:27,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:27,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:27,083 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:27,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1868241085] [2020-10-22 01:14:27,095 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:27,096 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:27,098 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:27,098 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:32,706 WARN L193 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:14:32,747 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:32,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:32,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:32,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:32,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:32,749 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-22 01:14:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:32,874 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-22 01:14:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:32,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:32,877 INFO L225 Difference]: With dead ends: 121 [2020-10-22 01:14:32,878 INFO L226 Difference]: Without dead ends: 116 [2020-10-22 01:14:32,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-22 01:14:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-22 01:14:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-22 01:14:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-22 01:14:32,883 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-22 01:14:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:32,884 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-22 01:14:32,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-22 01:14:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:32,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:32,885 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:33,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-22 01:14:33,086 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:33,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2023027158, now seen corresponding path program 4 times [2020-10-22 01:14:33,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:33,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246649116] [2020-10-22 01:14:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:33,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246649116] [2020-10-22 01:14:33,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366686357] [2020-10-22 01:14:33,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:33,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:33,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:33,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:33,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:33,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:33,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:33,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [762258913] [2020-10-22 01:14:33,294 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:33,295 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:33,298 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:14:33,298 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:40,345 WARN L193 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:14:40,667 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 01:14:40,703 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3030#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:40,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:40,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:40,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:40,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:40,705 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 8 states. [2020-10-22 01:14:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:40,867 INFO L93 Difference]: Finished difference Result 123 states and 295 transitions. [2020-10-22 01:14:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:40,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:40,869 INFO L225 Difference]: With dead ends: 123 [2020-10-22 01:14:40,869 INFO L226 Difference]: Without dead ends: 118 [2020-10-22 01:14:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:14:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-22 01:14:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-22 01:14:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-22 01:14:40,874 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-22 01:14:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:40,876 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-22 01:14:40,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-22 01:14:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:40,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:40,877 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:41,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:41,089 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2023028119, now seen corresponding path program 5 times [2020-10-22 01:14:41,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:41,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173416980] [2020-10-22 01:14:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:41,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173416980] [2020-10-22 01:14:41,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228047072] [2020-10-22 01:14:41,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:41,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:41,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:41,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:41,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:41,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:41,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:41,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:41,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1315259665] [2020-10-22 01:14:41,279 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:41,280 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:41,282 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-22 01:14:41,282 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:45,805 WARN L193 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:14:45,827 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:45,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:45,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:45,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:45,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:45,829 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 7 states. [2020-10-22 01:14:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:45,958 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-22 01:14:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:45,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:45,960 INFO L225 Difference]: With dead ends: 126 [2020-10-22 01:14:45,960 INFO L226 Difference]: Without dead ends: 121 [2020-10-22 01:14:45,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-22 01:14:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-22 01:14:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-22 01:14:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-22 01:14:45,965 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-22 01:14:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:45,966 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-22 01:14:45,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-22 01:14:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:45,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:45,967 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:46,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:46,168 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:46,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:46,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2023920888, now seen corresponding path program 6 times [2020-10-22 01:14:46,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:46,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266724144] [2020-10-22 01:14:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266724144] [2020-10-22 01:14:46,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421254755] [2020-10-22 01:14:46,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:46,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:14:46,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:46,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:46,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:46,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:46,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:46,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:46,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1334739097] [2020-10-22 01:14:46,390 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:46,391 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:46,394 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-22 01:14:46,394 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:46,542 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:14:46,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:14:46,604 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3762#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 3763#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:46,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:14:46,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:46,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:14:46,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:46,606 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 9 states. [2020-10-22 01:14:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:46,808 INFO L93 Difference]: Finished difference Result 140 states and 330 transitions. [2020-10-22 01:14:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:46,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-22 01:14:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:46,810 INFO L225 Difference]: With dead ends: 140 [2020-10-22 01:14:46,810 INFO L226 Difference]: Without dead ends: 135 [2020-10-22 01:14:46,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:14:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-22 01:14:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2020-10-22 01:14:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-22 01:14:46,815 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-22 01:14:46,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:46,815 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-22 01:14:46,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:14:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-22 01:14:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:46,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:46,816 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:47,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-22 01:14:47,027 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:47,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2023921849, now seen corresponding path program 7 times [2020-10-22 01:14:47,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:47,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139898258] [2020-10-22 01:14:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:47,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139898258] [2020-10-22 01:14:47,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623920814] [2020-10-22 01:14:47,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:47,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:47,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:47,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:47,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:47,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:47,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1311283693] [2020-10-22 01:14:47,238 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:47,238 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:47,240 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-22 01:14:47,240 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:47,313 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:47,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:47,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:47,314 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 7 states. [2020-10-22 01:14:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:47,441 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-22 01:14:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:47,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-22 01:14:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:47,443 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:14:47,443 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:14:47,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:14:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-10-22 01:14:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 01:14:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 237 transitions. [2020-10-22 01:14:47,448 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 237 transitions. Word has length 11 [2020-10-22 01:14:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:47,449 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 237 transitions. [2020-10-22 01:14:47,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 237 transitions. [2020-10-22 01:14:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:47,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:47,449 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:47,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:47,650 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2023950679, now seen corresponding path program 8 times [2020-10-22 01:14:47,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:47,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955505497] [2020-10-22 01:14:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:47,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955505497] [2020-10-22 01:14:47,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394782919] [2020-10-22 01:14:47,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:47,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:47,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:47,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:47,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:47,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:14:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:47,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:47,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-22 01:14:47,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1535337912] [2020-10-22 01:14:47,872 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:47,872 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:47,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-22 01:14:47,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:50,255 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:14:50,279 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4541#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:14:50,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:50,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:50,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:50,280 INFO L87 Difference]: Start difference. First operand 97 states and 237 transitions. Second operand 8 states. [2020-10-22 01:14:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:50,411 INFO L93 Difference]: Finished difference Result 141 states and 327 transitions. [2020-10-22 01:14:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:50,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:50,412 INFO L225 Difference]: With dead ends: 141 [2020-10-22 01:14:50,412 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 01:14:50,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:14:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 01:14:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2020-10-22 01:14:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-22 01:14:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-22 01:14:50,417 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-22 01:14:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:50,418 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-22 01:14:50,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-22 01:14:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:50,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:50,419 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:50,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-22 01:14:50,623 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1984724146, now seen corresponding path program 4 times [2020-10-22 01:14:50,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:50,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179684165] [2020-10-22 01:14:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179684165] [2020-10-22 01:14:50,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981975041] [2020-10-22 01:14:50,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:50,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:50,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:50,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:14:50,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:50,849 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:14:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:50,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:50,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:14:50,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2083976433] [2020-10-22 01:14:50,871 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:50,872 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:50,875 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-22 01:14:50,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,387 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:14:55,838 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 9 [2020-10-22 01:14:59,430 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-22 01:14:59,463 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:59,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:59,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:59,465 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-22 01:14:59,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:59,589 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-22 01:14:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:59,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-22 01:14:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:59,593 INFO L225 Difference]: With dead ends: 143 [2020-10-22 01:14:59,593 INFO L226 Difference]: Without dead ends: 138 [2020-10-22 01:14:59,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:14:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-22 01:14:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-22 01:14:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-22 01:14:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-22 01:14:59,598 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-22 01:14:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:59,599 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-22 01:14:59,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-22 01:14:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:59,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:59,600 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:59,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-22 01:14:59,803 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:14:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1071251737, now seen corresponding path program 4 times [2020-10-22 01:14:59,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:59,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746426951] [2020-10-22 01:14:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:59,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746426951] [2020-10-22 01:14:59,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646128730] [2020-10-22 01:14:59,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:59,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:59,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:14:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:00,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:00,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:00,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:00,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [777689337] [2020-10-22 01:15:00,050 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:00,052 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:00,054 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 01:15:00,054 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:02,103 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 01:15:04,203 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 24 [2020-10-22 01:15:04,263 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5339#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5340#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0)), 5341#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 5)), 5342#(and (<= (+ (* 4 ~i~0) ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:04,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:15:04,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:04,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:15:04,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:04,264 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-22 01:15:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:04,521 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-22 01:15:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:15:04,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-22 01:15:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:04,523 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:04,524 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:04,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:15:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-10-22 01:15:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:04,529 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-22 01:15:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:04,529 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:04,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:15:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:04,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:04,530 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:04,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 01:15:04,743 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1711561906, now seen corresponding path program 9 times [2020-10-22 01:15:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:04,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108106555] [2020-10-22 01:15:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:04,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108106555] [2020-10-22 01:15:04,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654503630] [2020-10-22 01:15:04,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:04,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:04,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:04,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:04,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:04,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:04,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:04,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:04,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1735301149] [2020-10-22 01:15:04,987 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:04,988 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:04,990 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:04,991 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:08,552 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-22 01:15:10,131 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:10,166 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:10,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:10,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:10,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:10,167 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 8 states. [2020-10-22 01:15:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:10,333 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-22 01:15:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:10,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:10,336 INFO L225 Difference]: With dead ends: 152 [2020-10-22 01:15:10,336 INFO L226 Difference]: Without dead ends: 147 [2020-10-22 01:15:10,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:15:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-22 01:15:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-22 01:15:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-22 01:15:10,341 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-22 01:15:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:10,341 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-22 01:15:10,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-22 01:15:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:10,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:10,342 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:10,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 01:15:10,554 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1711533076, now seen corresponding path program 10 times [2020-10-22 01:15:10,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:10,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829731677] [2020-10-22 01:15:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:10,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829731677] [2020-10-22 01:15:10,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776338552] [2020-10-22 01:15:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:10,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:10,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:10,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:10,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:10,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:11,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:11,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-22 01:15:11,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [683498624] [2020-10-22 01:15:11,950 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:11,951 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:11,953 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:11,953 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:15,534 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:22,464 WARN L193 SmtUtils]: Spent 6.93 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:15:22,484 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6211#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:22,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:22,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:22,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2020-10-22 01:15:22,485 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 9 states. [2020-10-22 01:15:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:29,196 INFO L93 Difference]: Finished difference Result 156 states and 370 transitions. [2020-10-22 01:15:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:29,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:29,198 INFO L225 Difference]: With dead ends: 156 [2020-10-22 01:15:29,198 INFO L226 Difference]: Without dead ends: 151 [2020-10-22 01:15:29,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=128, Invalid=287, Unknown=5, NotChecked=0, Total=420 [2020-10-22 01:15:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-22 01:15:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 112. [2020-10-22 01:15:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-22 01:15:29,204 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-22 01:15:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:29,204 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-22 01:15:29,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-22 01:15:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:29,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:29,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:29,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:29,407 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:29,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1711532115, now seen corresponding path program 11 times [2020-10-22 01:15:29,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:29,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619164851] [2020-10-22 01:15:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619164851] [2020-10-22 01:15:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474896656] [2020-10-22 01:15:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:29,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:29,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:29,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:29,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:29,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:29,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:29,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599304344] [2020-10-22 01:15:29,643 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:29,644 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:29,646 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:29,646 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:35,760 WARN L193 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:15:35,808 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:35,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:35,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:35,810 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 8 states. [2020-10-22 01:15:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:35,964 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-22 01:15:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:35,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:35,966 INFO L225 Difference]: With dead ends: 148 [2020-10-22 01:15:35,967 INFO L226 Difference]: Without dead ends: 143 [2020-10-22 01:15:35,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-22 01:15:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-22 01:15:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-22 01:15:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-22 01:15:35,971 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-22 01:15:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:35,971 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-22 01:15:35,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-22 01:15:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:35,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:35,972 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:36,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:36,184 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:36,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1710639346, now seen corresponding path program 12 times [2020-10-22 01:15:36,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:36,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679689777] [2020-10-22 01:15:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:36,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679689777] [2020-10-22 01:15:36,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128271636] [2020-10-22 01:15:36,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:36,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:36,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:36,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:36,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:36,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:36,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:36,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [6385017] [2020-10-22 01:15:36,447 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:36,448 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:36,449 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:36,450 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:36,819 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:36,904 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7078#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0)), 7079#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 8))] [2020-10-22 01:15:36,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:15:36,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:15:36,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:15:36,906 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 10 states. [2020-10-22 01:15:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:37,118 INFO L93 Difference]: Finished difference Result 154 states and 369 transitions. [2020-10-22 01:15:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:37,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:15:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:37,121 INFO L225 Difference]: With dead ends: 154 [2020-10-22 01:15:37,121 INFO L226 Difference]: Without dead ends: 149 [2020-10-22 01:15:37,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:15:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-22 01:15:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-22 01:15:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:15:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-22 01:15:37,127 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-22 01:15:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:37,128 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-22 01:15:37,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:15:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-22 01:15:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:37,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:37,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:37,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:37,343 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1710638385, now seen corresponding path program 13 times [2020-10-22 01:15:37,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:37,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995761551] [2020-10-22 01:15:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:37,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995761551] [2020-10-22 01:15:37,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861694763] [2020-10-22 01:15:37,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:37,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:37,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:37,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:37,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:37,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [453087447] [2020-10-22 01:15:37,572 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:37,573 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:37,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:37,575 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:40,102 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:15:40,122 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:40,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:40,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:40,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:40,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:40,123 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 8 states. [2020-10-22 01:15:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:40,330 INFO L93 Difference]: Finished difference Result 146 states and 353 transitions. [2020-10-22 01:15:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:40,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:40,332 INFO L225 Difference]: With dead ends: 146 [2020-10-22 01:15:40,332 INFO L226 Difference]: Without dead ends: 141 [2020-10-22 01:15:40,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-22 01:15:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-22 01:15:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-22 01:15:40,338 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 12 [2020-10-22 01:15:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:40,338 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-22 01:15:40,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-22 01:15:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:40,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:40,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:40,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-22 01:15:40,551 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:40,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:40,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1710609555, now seen corresponding path program 14 times [2020-10-22 01:15:40,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:40,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467522284] [2020-10-22 01:15:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:40,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467522284] [2020-10-22 01:15:40,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993564130] [2020-10-22 01:15:40,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:40,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:40,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:40,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:40,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:40,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:40,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:40,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1215766186] [2020-10-22 01:15:40,804 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:40,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:40,806 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-22 01:15:40,806 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:41,171 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:41,246 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7954#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-22 01:15:41,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:15:41,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:15:41,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:15:41,248 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 9 states. [2020-10-22 01:15:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:41,463 INFO L93 Difference]: Finished difference Result 149 states and 359 transitions. [2020-10-22 01:15:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:41,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:15:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:41,465 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:41,467 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:41,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-22 01:15:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-22 01:15:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 284 transitions. [2020-10-22 01:15:41,471 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 284 transitions. Word has length 12 [2020-10-22 01:15:41,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:41,472 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 284 transitions. [2020-10-22 01:15:41,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:15:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 284 transitions. [2020-10-22 01:15:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:41,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:41,473 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:41,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-22 01:15:41,683 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1710608594, now seen corresponding path program 15 times [2020-10-22 01:15:41,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:41,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242427002] [2020-10-22 01:15:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:41,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242427002] [2020-10-22 01:15:41,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362035167] [2020-10-22 01:15:41,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:41,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:15:41,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:41,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:41,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:41,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1551744470] [2020-10-22 01:15:41,957 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:41,958 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:41,960 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-22 01:15:41,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:48,997 WARN L193 SmtUtils]: Spent 7.02 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:15:49,019 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:49,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:49,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:49,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:49,021 INFO L87 Difference]: Start difference. First operand 113 states and 284 transitions. Second operand 8 states. [2020-10-22 01:15:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:49,204 INFO L93 Difference]: Finished difference Result 149 states and 352 transitions. [2020-10-22 01:15:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:49,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:49,209 INFO L225 Difference]: With dead ends: 149 [2020-10-22 01:15:49,209 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:15:49,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:15:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-22 01:15:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-22 01:15:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-22 01:15:49,213 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-22 01:15:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:49,214 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-22 01:15:49,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-22 01:15:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:49,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:49,215 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:49,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 01:15:49,425 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1682933716, now seen corresponding path program 16 times [2020-10-22 01:15:49,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:49,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980898531] [2020-10-22 01:15:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:49,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980898531] [2020-10-22 01:15:49,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868201192] [2020-10-22 01:15:49,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:49,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:49,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:49,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:49,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:49,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:49,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:49,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:49,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [5391017] [2020-10-22 01:15:49,636 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:49,637 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:49,638 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-22 01:15:49,638 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:51,722 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:15:53,809 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:15:54,258 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:15:54,311 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 01:15:54,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:15:56,428 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:15:56,429 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [8823#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 8824#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7)), 8825#(and (<= (+ (* 3 ~i~0) ~j~0) 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:15:56,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:15:56,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:56,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:15:56,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:56,430 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 11 states. [2020-10-22 01:15:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:56,737 INFO L93 Difference]: Finished difference Result 174 states and 410 transitions. [2020-10-22 01:15:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-22 01:15:56,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-22 01:15:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:56,740 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:56,740 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:56,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:15:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 118. [2020-10-22 01:15:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:15:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:15:56,745 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:15:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:56,745 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:15:56,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:15:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:15:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:56,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:56,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:56,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-22 01:15:56,949 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:56,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1682932755, now seen corresponding path program 17 times [2020-10-22 01:15:56,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:56,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605049520] [2020-10-22 01:15:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:57,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605049520] [2020-10-22 01:15:57,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130987801] [2020-10-22 01:15:57,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:57,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:15:57,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:57,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:57,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:15:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:57,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:57,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:57,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1807818362] [2020-10-22 01:15:57,155 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:57,156 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:57,158 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:15:57,158 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:57,663 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:15:57,664 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:57,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:15:57,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:15:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:15:57,665 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:15:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:57,850 INFO L93 Difference]: Finished difference Result 174 states and 412 transitions. [2020-10-22 01:15:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:15:57,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:15:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:57,853 INFO L225 Difference]: With dead ends: 174 [2020-10-22 01:15:57,853 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:15:57,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:15:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 117. [2020-10-22 01:15:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-22 01:15:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 290 transitions. [2020-10-22 01:15:57,862 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 290 transitions. Word has length 12 [2020-10-22 01:15:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:57,862 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 290 transitions. [2020-10-22 01:15:57,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:15:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 290 transitions. [2020-10-22 01:15:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:15:57,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:57,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:15:58,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-22 01:15:58,073 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:15:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:58,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1682903925, now seen corresponding path program 18 times [2020-10-22 01:15:58,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:58,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937976855] [2020-10-22 01:15:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:58,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937976855] [2020-10-22 01:15:58,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704292879] [2020-10-22 01:15:58,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:58,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-22 01:15:58,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:58,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:15:58,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:58,313 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:15:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:15:58,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:58,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:15:58,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1282581766] [2020-10-22 01:15:58,327 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:58,328 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:58,331 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-22 01:15:58,331 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:00,385 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:16:02,522 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:16:02,523 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9770#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:16:02,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:02,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:02,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:16:02,523 INFO L87 Difference]: Start difference. First operand 117 states and 290 transitions. Second operand 9 states. [2020-10-22 01:16:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:02,743 INFO L93 Difference]: Finished difference Result 170 states and 401 transitions. [2020-10-22 01:16:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:16:02,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:16:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:02,746 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:16:02,746 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:16:02,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:16:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:16:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-22 01:16:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-22 01:16:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-22 01:16:02,751 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-22 01:16:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:02,751 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-22 01:16:02,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-22 01:16:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:02,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:02,752 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:02,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:02,964 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902964, now seen corresponding path program 19 times [2020-10-22 01:16:02,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:02,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455976996] [2020-10-22 01:16:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455976996] [2020-10-22 01:16:03,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131506760] [2020-10-22 01:16:03,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:03,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:16:03,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:03,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:03,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:03,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:16:03,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [870411797] [2020-10-22 01:16:03,188 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:03,188 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:03,190 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:16:03,190 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:07,355 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:16:07,356 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:07,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:16:07,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:07,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:16:07,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:16:07,357 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-22 01:16:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:07,542 INFO L93 Difference]: Finished difference Result 170 states and 403 transitions. [2020-10-22 01:16:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:16:07,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-22 01:16:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:07,544 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:16:07,544 INFO L226 Difference]: Without dead ends: 165 [2020-10-22 01:16:07,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:16:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-22 01:16:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 116. [2020-10-22 01:16:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-22 01:16:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 285 transitions. [2020-10-22 01:16:07,548 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 285 transitions. Word has length 12 [2020-10-22 01:16:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:07,549 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 285 transitions. [2020-10-22 01:16:07,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:16:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 285 transitions. [2020-10-22 01:16:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:07,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:07,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:07,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 01:16:07,759 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:07,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1682010195, now seen corresponding path program 20 times [2020-10-22 01:16:07,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:07,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184806997] [2020-10-22 01:16:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184806997] [2020-10-22 01:16:07,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456714113] [2020-10-22 01:16:07,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:07,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:16:07,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:16:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:07,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:08,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:08,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-22 01:16:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1141546583] [2020-10-22 01:16:08,012 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:08,013 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:08,015 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:16:08,016 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:10,071 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:16:12,285 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-22 01:16:12,687 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-22 01:16:16,806 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:16:16,836 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10699#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7)), 10700#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-22 01:16:16,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:16:16,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:16:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:16,837 INFO L87 Difference]: Start difference. First operand 116 states and 285 transitions. Second operand 10 states. [2020-10-22 01:16:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:17,070 INFO L93 Difference]: Finished difference Result 183 states and 422 transitions. [2020-10-22 01:16:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:17,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-22 01:16:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:17,072 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:17,072 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:17,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:16:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2020-10-22 01:16:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-22 01:16:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-22 01:16:17,077 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-22 01:16:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:17,077 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-22 01:16:17,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:16:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-22 01:16:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:17,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:17,078 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:17,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-22 01:16:17,285 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1396877225, now seen corresponding path program 5 times [2020-10-22 01:16:17,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:17,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438874053] [2020-10-22 01:16:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:17,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438874053] [2020-10-22 01:16:17,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347571835] [2020-10-22 01:16:17,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:17,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:17,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:17,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:17,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:17,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:17,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:17,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:17,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [716355958] [2020-10-22 01:16:17,591 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:17,592 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:17,594 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 01:16:17,594 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:21,637 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 38 DAG size of output: 9 [2020-10-22 01:16:28,849 WARN L193 SmtUtils]: Spent 7.21 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:16:29,842 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 9 [2020-10-22 01:16:37,049 WARN L193 SmtUtils]: Spent 7.19 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-22 01:16:40,324 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-22 01:16:42,408 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-22 01:16:42,419 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:42,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:42,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:42,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:42,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:16:42,420 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-22 01:16:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:42,545 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-22 01:16:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:42,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-22 01:16:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:42,547 INFO L225 Difference]: With dead ends: 164 [2020-10-22 01:16:42,547 INFO L226 Difference]: Without dead ends: 159 [2020-10-22 01:16:42,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:16:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-22 01:16:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-22 01:16:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-22 01:16:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-22 01:16:42,551 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-22 01:16:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-22 01:16:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-22 01:16:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:16:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:42,553 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:42,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:42,763 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1150962717, now seen corresponding path program 5 times [2020-10-22 01:16:42,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:42,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093538782] [2020-10-22 01:16:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:42,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093538782] [2020-10-22 01:16:42,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389742570] [2020-10-22 01:16:42,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:42,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 01:16:42,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:42,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:43,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:43,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:43,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:43,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1232106521] [2020-10-22 01:16:43,061 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:43,062 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:43,064 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 01:16:43,064 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:45,147 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:16:47,219 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:16:47,702 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-22 01:16:47,735 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [11648#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 4 ~i~0) ~j~0) 6)), 11649#(and (<= (+ (* 5 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11645#(and (<= (+ ~i~0 ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11646#(and (<= (+ (* 2 ~i~0) ~j~0) 6) (= ULTIMATE.start_main_~condI~0 0)), 11647#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 6))] [2020-10-22 01:16:47,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 01:16:47,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:47,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 01:16:47,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:16:47,737 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-22 01:16:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:48,077 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-22 01:16:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 01:16:48,078 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-22 01:16:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:48,079 INFO L225 Difference]: With dead ends: 175 [2020-10-22 01:16:48,079 INFO L226 Difference]: Without dead ends: 169 [2020-10-22 01:16:48,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2020-10-22 01:16:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-22 01:16:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-22 01:16:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:16:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:16:48,083 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-22 01:16:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:48,083 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:16:48,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 01:16:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:16:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:48,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:48,085 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:48,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:48,295 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1518812168, now seen corresponding path program 21 times [2020-10-22 01:16:48,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:48,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309552312] [2020-10-22 01:16:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:48,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309552312] [2020-10-22 01:16:48,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041614442] [2020-10-22 01:16:48,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:48,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 01:16:48,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:48,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:48,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:16:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:48,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:48,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:16:48,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144025219] [2020-10-22 01:16:48,549 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:48,550 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:48,552 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:48,552 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:51,040 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-22 01:16:53,321 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:16:54,781 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:16:54,801 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:54,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:16:54,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:54,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:16:54,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:16:54,803 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:16:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:54,983 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-22 01:16:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:16:54,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:16:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:54,985 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:16:54,985 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:16:54,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:16:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:16:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:16:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:16:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:16:54,992 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:16:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:54,993 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:16:54,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:16:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:16:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:16:54,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:54,993 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:16:55,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-22 01:16:55,206 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:16:55,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1518783338, now seen corresponding path program 22 times [2020-10-22 01:16:55,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:55,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628412253] [2020-10-22 01:16:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:55,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628412253] [2020-10-22 01:16:55,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718458814] [2020-10-22 01:16:55,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:55,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:16:55,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:16:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:55,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:16:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:16:56,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:56,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:16:56,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120286284] [2020-10-22 01:16:56,667 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:56,668 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:56,670 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:16:56,670 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:02,732 WARN L193 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:17:02,795 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12665#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:02,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:17:02,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:17:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:17:02,796 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:17:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:10,776 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:17:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:10,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:17:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:10,778 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:17:10,778 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:17:10,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=168, Invalid=378, Unknown=6, NotChecked=0, Total=552 [2020-10-22 01:17:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:17:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 131. [2020-10-22 01:17:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:17:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-22 01:17:10,783 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-22 01:17:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:10,783 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-22 01:17:10,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:17:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-22 01:17:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:10,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:10,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:10,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:10,995 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1518782377, now seen corresponding path program 23 times [2020-10-22 01:17:10,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:10,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943129415] [2020-10-22 01:17:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:11,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943129415] [2020-10-22 01:17:11,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320300853] [2020-10-22 01:17:11,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:11,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:17:11,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:11,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:11,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:11,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:11,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [281485354] [2020-10-22 01:17:11,269 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:11,271 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:11,272 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:17:11,272 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:11,363 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:11,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:11,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:17:11,365 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 9 states. [2020-10-22 01:17:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:11,584 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-22 01:17:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:11,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:11,586 INFO L225 Difference]: With dead ends: 184 [2020-10-22 01:17:11,586 INFO L226 Difference]: Without dead ends: 179 [2020-10-22 01:17:11,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:17:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-22 01:17:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-22 01:17:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-22 01:17:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-22 01:17:11,590 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-22 01:17:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:11,591 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-22 01:17:11,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-22 01:17:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:11,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:11,592 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:11,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-22 01:17:11,803 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:11,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1517889608, now seen corresponding path program 24 times [2020-10-22 01:17:11,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:11,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304380321] [2020-10-22 01:17:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:11,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304380321] [2020-10-22 01:17:11,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591228385] [2020-10-22 01:17:11,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:11,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 01:17:11,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:11,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:11,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:12,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:17:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:12,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:12,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:17:12,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1461390773] [2020-10-22 01:17:12,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:12,122 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:12,124 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:17:12,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:14,190 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-22 01:17:16,292 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-22 01:17:22,028 WARN L193 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:17:29,492 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:17:29,514 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [13692#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 13693#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:17:29,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:17:29,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:29,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:17:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:17:29,516 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 11 states. [2020-10-22 01:17:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:29,795 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-22 01:17:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:29,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-22 01:17:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:29,797 INFO L225 Difference]: With dead ends: 192 [2020-10-22 01:17:29,797 INFO L226 Difference]: Without dead ends: 187 [2020-10-22 01:17:29,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:17:29,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-22 01:17:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-10-22 01:17:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-22 01:17:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-22 01:17:29,802 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-22 01:17:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:29,802 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-22 01:17:29,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:17:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-22 01:17:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:29,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:29,803 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:30,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:30,004 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:30,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888647, now seen corresponding path program 25 times [2020-10-22 01:17:30,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:30,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250372812] [2020-10-22 01:17:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:30,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250372812] [2020-10-22 01:17:30,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350633146] [2020-10-22 01:17:30,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:17:30,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:32,289 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_div_v_~i~0_110_28 Int) (aux_div_aux_mod_v_~i~0_110_28_86 Int)) (let ((.cse0 (* 2 aux_div_v_~i~0_110_28)) (.cse1 (* 2 aux_div_aux_mod_v_~i~0_110_28_86))) (and (<= (+ .cse0 .cse1 9) c_~j~0) (<= (+ .cse1 c_~i~0 4) (* 2 c_~j~0)) (< aux_div_aux_mod_v_~i~0_110_28_86 0) (< c_~i~0 (+ .cse0 c_~j~0 7)) (< c_~j~0 (+ .cse0 .cse1 12)) (< aux_div_v_~i~0_110_28 0)))) is different from true [2020-10-22 01:17:32,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:17:38,488 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-22 01:17:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:17:38,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:38,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:17:38,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [798523073] [2020-10-22 01:17:38,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:38,490 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:38,492 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:17:38,492 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:42,476 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:17:49,288 WARN L193 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:17:49,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:49,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:17:49,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:49,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:17:49,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=144, Unknown=2, NotChecked=26, Total=240 [2020-10-22 01:17:49,319 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-22 01:17:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:59,755 INFO L93 Difference]: Finished difference Result 183 states and 439 transitions. [2020-10-22 01:17:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:17:59,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:17:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:59,757 INFO L225 Difference]: With dead ends: 183 [2020-10-22 01:17:59,757 INFO L226 Difference]: Without dead ends: 178 [2020-10-22 01:17:59,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=167, Invalid=336, Unknown=7, NotChecked=42, Total=552 [2020-10-22 01:17:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-22 01:17:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-22 01:17:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-22 01:17:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-22 01:17:59,762 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-22 01:17:59,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:59,762 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-22 01:17:59,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:17:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-22 01:17:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:17:59,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:59,762 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:17:59,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-22 01:17:59,963 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:17:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:59,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1517859817, now seen corresponding path program 26 times [2020-10-22 01:17:59,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:59,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686273470] [2020-10-22 01:17:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686273470] [2020-10-22 01:18:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573378085] [2020-10-22 01:18:00,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:00,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:00,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:00,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:00,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:00,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:06,359 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2020-10-22 01:18:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:06,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:06,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-22 01:18:06,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [245712777] [2020-10-22 01:18:06,362 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:06,363 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:06,365 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 01:18:06,365 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:13,606 WARN L193 SmtUtils]: Spent 7.22 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:18:18,394 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:18,436 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14731#(and (<= (+ ~i~0 ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:18,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:18:18,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:18,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:18:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2020-10-22 01:18:18,438 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-22 01:18:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:28,772 INFO L93 Difference]: Finished difference Result 186 states and 445 transitions. [2020-10-22 01:18:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:28,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-22 01:18:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:28,780 INFO L225 Difference]: With dead ends: 186 [2020-10-22 01:18:28,780 INFO L226 Difference]: Without dead ends: 181 [2020-10-22 01:18:28,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=177, Invalid=417, Unknown=6, NotChecked=0, Total=600 [2020-10-22 01:18:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-22 01:18:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-10-22 01:18:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:18:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 326 transitions. [2020-10-22 01:18:28,783 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 326 transitions. Word has length 13 [2020-10-22 01:18:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:28,783 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 326 transitions. [2020-10-22 01:18:28,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:18:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 326 transitions. [2020-10-22 01:18:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:28,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:28,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:28,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-22 01:18:28,986 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:28,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1517858856, now seen corresponding path program 27 times [2020-10-22 01:18:28,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:28,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648405564] [2020-10-22 01:18:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:29,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648405564] [2020-10-22 01:18:29,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660221963] [2020-10-22 01:18:29,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:29,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:18:29,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:29,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:29,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:29,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:29,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:29,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:29,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1520826908] [2020-10-22 01:18:29,262 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:29,263 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:29,265 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-22 01:18:29,265 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:35,374 WARN L193 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-22 01:18:40,670 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:40,699 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:40,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:40,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:40,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:40,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:40,701 INFO L87 Difference]: Start difference. First operand 130 states and 326 transitions. Second operand 9 states. [2020-10-22 01:18:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:40,961 INFO L93 Difference]: Finished difference Result 176 states and 422 transitions. [2020-10-22 01:18:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:40,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-22 01:18:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:40,963 INFO L225 Difference]: With dead ends: 176 [2020-10-22 01:18:40,963 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 01:18:40,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:18:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 01:18:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2020-10-22 01:18:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-22 01:18:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-22 01:18:40,967 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-22 01:18:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:40,967 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-22 01:18:40,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:18:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-22 01:18:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:40,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:40,968 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:41,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-22 01:18:41,169 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183978, now seen corresponding path program 28 times [2020-10-22 01:18:41,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:41,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380723617] [2020-10-22 01:18:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:41,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380723617] [2020-10-22 01:18:41,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479214985] [2020-10-22 01:18:41,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:41,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:18:41,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:41,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:41,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:41,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:18:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:41,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:41,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:41,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [808994632] [2020-10-22 01:18:41,431 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:41,432 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:41,434 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-22 01:18:41,434 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:41,558 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [15744#(and (<= (+ ~i~0 ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15745#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 15746#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-22 01:18:41,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:18:41,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:18:41,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:18:41,559 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 12 states. [2020-10-22 01:18:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:41,877 INFO L93 Difference]: Finished difference Result 185 states and 443 transitions. [2020-10-22 01:18:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:18:41,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-22 01:18:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:41,879 INFO L225 Difference]: With dead ends: 185 [2020-10-22 01:18:41,879 INFO L226 Difference]: Without dead ends: 180 [2020-10-22 01:18:41,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-22 01:18:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-22 01:18:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-22 01:18:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-22 01:18:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-10-22 01:18:41,884 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-10-22 01:18:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:41,884 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-10-22 01:18:41,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:18:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-10-22 01:18:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:18:41,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:41,885 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:42,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 01:18:42,096 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183017, now seen corresponding path program 29 times [2020-10-22 01:18:42,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:42,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14509196] [2020-10-22 01:18:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14509196] [2020-10-22 01:18:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947366709] [2020-10-22 01:18:42,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:42,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:42,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:42,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:18:42,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:42,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:18:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:42,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:42,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-22 01:18:42,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214154535] [2020-10-22 01:18:42,420 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:42,422 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:42,425 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-22 01:18:42,425 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:42,689 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-22 01:18:42,717 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:42,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:18:42,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:42,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:18:42,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:18:42,718 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 9 states. Received shutdown request... [2020-10-22 01:18:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:18:43,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 01:18:43,107 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 01:18:43,114 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 01:18:43,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:43 BasicIcfg [2020-10-22 01:18:43,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:43,116 INFO L168 Benchmark]: Toolchain (without parser) took 275749.34 ms. Allocated memory was 145.8 MB in the beginning and 255.3 MB in the end (delta: 109.6 MB). Free memory was 100.7 MB in the beginning and 131.7 MB in the end (delta: -31.0 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,116 INFO L168 Benchmark]: CDTParser took 3.03 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.57 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 159.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,118 INFO L168 Benchmark]: Boogie Preprocessor took 30.74 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 154.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,118 INFO L168 Benchmark]: RCFGBuilder took 424.58 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 132.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,120 INFO L168 Benchmark]: TraceAbstraction took 274569.81 ms. Allocated memory was 202.9 MB in the beginning and 255.3 MB in the end (delta: 52.4 MB). Free memory was 131.9 MB in the beginning and 131.7 MB in the end (delta: 241.8 kB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:43,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.03 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.57 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 159.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.74 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 154.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.58 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 132.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 274569.81 ms. Allocated memory was 202.9 MB in the beginning and 255.3 MB in the end (delta: 52.4 MB). Free memory was 131.9 MB in the beginning and 131.7 MB in the end (delta: 241.8 kB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 710 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 19 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 1183 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (133states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (46 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 274.4s, OverallIterations: 40, TraceHistogramMax: 5, AutomataDifference: 42.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 518 SDtfs, 2336 SDslu, 2640 SDs, 0 SdLazy, 1997 SolverSat, 434 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 370 SyntacticMatches, 30 SemanticMatches, 678 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 60.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 39 MinimizatonAttempts, 1386 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 789 ConstructedInterpolants, 6 QuantifiedInterpolants, 70957 SizeOfPredicates, 35 NumberOfNonLiveVariables, 3377 ConjunctsInSsa, 314 ConjunctsInUnsatCore, 75 InterpolantComputations, 5 PerfectInterpolantSequences, 0/240 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