/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-WP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:38:18,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:38:18,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:38:18,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:38:18,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:38:18,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:38:18,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:38:18,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:38:18,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:38:18,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:38:18,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:38:18,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:38:18,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:38:18,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:38:18,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:38:18,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:38:18,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:38:18,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:38:18,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:38:18,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:38:18,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:38:18,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:38:18,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:38:18,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:38:18,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:38:18,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:38:18,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:38:18,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:38:18,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:38:18,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:38:18,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:38:18,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:38:18,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:38:18,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:38:18,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:38:18,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:38:18,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:38:18,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:38:18,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:38:18,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:38:18,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:38:18,467 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-WP.epf [2020-10-21 23:38:18,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:38:18,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:38:18,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:38:18,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:38:18,493 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:38:18,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:38:18,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:38:18,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:38:18,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:38:18,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:38:18,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:38:18,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:38:18,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:38:18,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:38:18,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:38:18,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:38:18,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:38:18,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:38:18,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:38:18,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:38:18,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:38:18,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:38:18,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:38:18,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:38:18,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:38:18,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:38:18,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:38:18,498 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-21 23:38:18,498 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:38:18,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:38:18,498 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-21 23:38:18,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:38:18,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:38:18,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:38:18,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:38:18,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:38:18,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-21 23:38:18,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f72d5364/87b56836356745028a6032577c63fdbc/FLAG046ac99a4 [2020-10-21 23:38:19,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:38:19,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-1.i [2020-10-21 23:38:19,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f72d5364/87b56836356745028a6032577c63fdbc/FLAG046ac99a4 [2020-10-21 23:38:19,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f72d5364/87b56836356745028a6032577c63fdbc [2020-10-21 23:38:19,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:38:19,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:38:19,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:38:19,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:38:19,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:38:19,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:38:19" (1/1) ... [2020-10-21 23:38:19,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d056e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:19, skipping insertion in model container [2020-10-21 23:38:19,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:38:19" (1/1) ... [2020-10-21 23:38:19,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:38:19,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:38:20,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:38:20,285 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:38:20,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:38:20,424 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:38:20,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20 WrapperNode [2020-10-21 23:38:20,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:38:20,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:38:20,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:38:20,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:38:20,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:38:20,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:38:20,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:38:20,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:38:20,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (1/1) ... [2020-10-21 23:38:20,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:38:20,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:38:20,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:38:20,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:38:20,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (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 [2020-10-21 23:38:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-21 23:38:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-21 23:38:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-21 23:38:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-21 23:38:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:38:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:38:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:38:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:38:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:38:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:38:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:38:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:38:20,583 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:38:20,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:38:20,951 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-21 23:38:20,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:38:20 BoogieIcfgContainer [2020-10-21 23:38:20,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:38:20,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:38:20,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:38:20,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:38:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:38:19" (1/3) ... [2020-10-21 23:38:20,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7e0eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:38:20, skipping insertion in model container [2020-10-21 23:38:20,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:38:20" (2/3) ... [2020-10-21 23:38:20,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7e0eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:38:20, skipping insertion in model container [2020-10-21 23:38:20,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:38:20" (3/3) ... [2020-10-21 23:38:20,964 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-1.i [2020-10-21 23:38:20,975 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:38:20,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:38:20,982 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:38:20,983 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:38:21,016 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,016 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,019 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,019 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,020 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,020 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,021 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,021 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,021 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,022 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,022 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,023 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,023 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,024 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,024 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,025 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,025 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,025 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,026 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,027 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,027 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,027 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,028 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,028 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,028 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,029 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,033 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,034 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,034 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,047 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,048 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:38:21,058 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:38:21,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 23:38:21,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:38:21,088 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:38:21,088 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:38:21,088 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-21 23:38:21,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:38:21,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:38:21,089 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:38:21,089 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:38:21,102 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:38:21,103 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 23:38:21,106 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-10-21 23:38:21,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-10-21 23:38:21,150 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-10-21 23:38:21,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:38:21,156 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. [2020-10-21 23:38:21,159 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-10-21 23:38:22,332 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-21 23:38:22,723 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-21 23:38:22,860 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 23:38:22,902 INFO L131 LiptonReduction]: Checked pairs total: 1183 [2020-10-21 23:38:22,902 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-21 23:38:22,913 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-21 23:38:22,923 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 23:38:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 23:38:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 23:38:22,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:22,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 23:38:22,934 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:22,938 INFO L82 PathProgramCache]: Analyzing trace with hash -542844556, now seen corresponding path program 1 times [2020-10-21 23:38:22,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:22,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410746653] [2020-10-21 23:38:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:23,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410746653] [2020-10-21 23:38:23,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:38:23,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:38:23,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [881407679] [2020-10-21 23:38:23,164 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:23,167 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:23,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-21 23:38:23,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:23,186 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:23,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:38:23,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:23,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:38:23,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:38:23,205 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-21 23:38:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:23,275 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-21 23:38:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:38:23,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-21 23:38:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:23,289 INFO L225 Difference]: With dead ends: 83 [2020-10-21 23:38:23,289 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 23:38:23,290 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 [2020-10-21 23:38:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 23:38:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-21 23:38:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-21 23:38:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-21 23:38:23,334 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-21 23:38:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:23,334 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-21 23:38:23,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:38:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-21 23:38:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:38:23,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:23,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:23,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:38:23,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1940739433, now seen corresponding path program 1 times [2020-10-21 23:38:23,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:23,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705583326] [2020-10-21 23:38:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:23,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705583326] [2020-10-21 23:38:23,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:38:23,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:38:23,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1781960949] [2020-10-21 23:38:23,483 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:23,484 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:23,488 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-21 23:38:23,488 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:23,543 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:23,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:38:23,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:38:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:38:23,547 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-21 23:38:23,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:23,619 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-21 23:38:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:38:23,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-21 23:38:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:23,622 INFO L225 Difference]: With dead ends: 80 [2020-10-21 23:38:23,622 INFO L226 Difference]: Without dead ends: 75 [2020-10-21 23:38:23,623 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 [2020-10-21 23:38:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-21 23:38:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-21 23:38:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-21 23:38:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-21 23:38:23,634 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-21 23:38:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:23,635 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-21 23:38:23,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:38:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-21 23:38:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:38:23,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:23,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:23,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:38:23,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1981941347, now seen corresponding path program 1 times [2020-10-21 23:38:23,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:23,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382382455] [2020-10-21 23:38:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:23,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382382455] [2020-10-21 23:38:23,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:38:23,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:38:23,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [630551061] [2020-10-21 23:38:23,711 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:23,712 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:23,713 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-21 23:38:23,714 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:23,754 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [551#(and (<= (+ ~i~0 ~j~0) 2) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:38:23,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:38:23,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:23,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:38:23,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:38:23,756 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-21 23:38:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:23,864 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-21 23:38:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:38:23,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-21 23:38:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:23,866 INFO L225 Difference]: With dead ends: 83 [2020-10-21 23:38:23,866 INFO L226 Difference]: Without dead ends: 77 [2020-10-21 23:38:23,867 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 [2020-10-21 23:38:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-21 23:38:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-21 23:38:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 23:38:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-21 23:38:23,877 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-21 23:38:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:23,878 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-21 23:38:23,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:38:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-21 23:38:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:38:23,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:23,879 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:23,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:38:23,880 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:23,880 INFO L82 PathProgramCache]: Analyzing trace with hash -33351122, now seen corresponding path program 2 times [2020-10-21 23:38:23,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:23,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944129032] [2020-10-21 23:38:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:23,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944129032] [2020-10-21 23:38:23,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038699263] [2020-10-21 23:38:23,986 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 [2020-10-21 23:38:24,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:38:24,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:24,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:38:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:24,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:38:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:24,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:24,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-21 23:38:24,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1759510065] [2020-10-21 23:38:24,158 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:24,159 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:24,161 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-21 23:38:24,161 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:24,228 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:24,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:38:24,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:24,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:38:24,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-21 23:38:24,230 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-21 23:38:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:24,343 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-21 23:38:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 23:38:24,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-21 23:38:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:24,351 INFO L225 Difference]: With dead ends: 101 [2020-10-21 23:38:24,351 INFO L226 Difference]: Without dead ends: 96 [2020-10-21 23:38:24,352 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 [2020-10-21 23:38:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-21 23:38:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-21 23:38:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-21 23:38:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-21 23:38:24,375 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-21 23:38:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:24,376 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-21 23:38:24,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:38:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-21 23:38:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:38:24,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:24,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:24,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:38:24,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:24,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1310611417, now seen corresponding path program 2 times [2020-10-21 23:38:24,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:24,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024887503] [2020-10-21 23:38:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:24,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024887503] [2020-10-21 23:38:24,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665239902] [2020-10-21 23:38:24,658 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 [2020-10-21 23:38:24,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:38:24,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:24,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:38:24,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:24,809 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:38:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:24,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:24,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-21 23:38:24,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2052983218] [2020-10-21 23:38:24,825 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:24,826 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:24,827 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-21 23:38:24,827 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:26,889 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:38:28,972 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-21 23:38:29,006 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))] [2020-10-21 23:38:29,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:38:29,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:38:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:38:29,007 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-21 23:38:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:29,148 INFO L93 Difference]: Finished difference Result 100 states and 239 transitions. [2020-10-21 23:38:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-21 23:38:29,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-21 23:38:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:29,150 INFO L225 Difference]: With dead ends: 100 [2020-10-21 23:38:29,150 INFO L226 Difference]: Without dead ends: 94 [2020-10-21 23:38:29,151 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 [2020-10-21 23:38:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-21 23:38:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-10-21 23:38:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-21 23:38:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-21 23:38:29,160 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 9 [2020-10-21 23:38:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:29,160 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-21 23:38:29,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:38:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-21 23:38:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:38:29,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:29,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:29,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:38:29,374 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:29,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1043120626, now seen corresponding path program 1 times [2020-10-21 23:38:29,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:29,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924634575] [2020-10-21 23:38:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:29,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924634575] [2020-10-21 23:38:29,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:38:29,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:38:29,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579412737] [2020-10-21 23:38:29,456 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:29,457 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:29,459 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-21 23:38:29,459 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:29,525 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:29,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:38:29,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:29,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:38:29,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:38:29,527 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-21 23:38:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:29,601 INFO L93 Difference]: Finished difference Result 107 states and 250 transitions. [2020-10-21 23:38:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 23:38:29,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-21 23:38:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:29,603 INFO L225 Difference]: With dead ends: 107 [2020-10-21 23:38:29,603 INFO L226 Difference]: Without dead ends: 102 [2020-10-21 23:38:29,603 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 [2020-10-21 23:38:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-21 23:38:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2020-10-21 23:38:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-21 23:38:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 195 transitions. [2020-10-21 23:38:29,612 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 195 transitions. Word has length 10 [2020-10-21 23:38:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:29,612 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 195 transitions. [2020-10-21 23:38:29,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:38:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 195 transitions. [2020-10-21 23:38:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:38:29,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:29,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:29,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:38:29,614 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:29,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091796, now seen corresponding path program 2 times [2020-10-21 23:38:29,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:29,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252268380] [2020-10-21 23:38:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:29,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252268380] [2020-10-21 23:38:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:38:29,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:38:29,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1614818958] [2020-10-21 23:38:29,671 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:29,672 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:29,674 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-21 23:38:29,674 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:31,744 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:38:31,799 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-21 23:38:31,799 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-21 23:38:33,913 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:38:33,938 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1640#(and (<= (+ ~i~0 ~j~0) 3) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:38:33,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:38:33,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:38:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:38:33,940 INFO L87 Difference]: Start difference. First operand 80 states and 195 transitions. Second operand 7 states. [2020-10-21 23:38:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:34,052 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2020-10-21 23:38:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-21 23:38:34,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-21 23:38:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:34,054 INFO L225 Difference]: With dead ends: 113 [2020-10-21 23:38:34,054 INFO L226 Difference]: Without dead ends: 108 [2020-10-21 23:38:34,055 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 [2020-10-21 23:38:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-21 23:38:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-21 23:38:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-21 23:38:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-21 23:38:34,070 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-21 23:38:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:34,071 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-21 23:38:34,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:38:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-21 23:38:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:38:34,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:34,077 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:34,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:38:34,077 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:34,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1033855625, now seen corresponding path program 3 times [2020-10-21 23:38:34,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:34,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942128391] [2020-10-21 23:38:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:34,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942128391] [2020-10-21 23:38:34,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684954325] [2020-10-21 23:38:34,198 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 [2020-10-21 23:38:34,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:38:34,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:38:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:34,321 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:38:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:34,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:34,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:38:34,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1245658549] [2020-10-21 23:38:34,343 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:34,344 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:34,345 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-21 23:38:34,346 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:39,557 WARN L193 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-21 23:38:40,228 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-21 23:38:40,242 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:40,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:38:40,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:38:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:38:40,244 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-21 23:38:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:40,352 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-21 23:38:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 23:38:40,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-21 23:38:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:40,355 INFO L225 Difference]: With dead ends: 122 [2020-10-21 23:38:40,355 INFO L226 Difference]: Without dead ends: 117 [2020-10-21 23:38:40,356 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 [2020-10-21 23:38:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-21 23:38:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-21 23:38:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-21 23:38:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-21 23:38:40,364 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-21 23:38:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:40,364 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-21 23:38:40,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:38:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-21 23:38:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:38:40,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:40,365 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:40,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:38:40,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:40,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1974220067, now seen corresponding path program 3 times [2020-10-21 23:38:40,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:40,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599869066] [2020-10-21 23:38:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:40,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599869066] [2020-10-21 23:38:40,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394567076] [2020-10-21 23:38:40,645 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 [2020-10-21 23:38:40,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:38:40,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:40,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:38:40,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:40,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:38:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:40,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:40,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:38:40,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [55212926] [2020-10-21 23:38:40,826 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:40,827 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:40,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-21 23:38:40,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:41,048 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:38:43,119 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-21 23:38:43,172 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))] [2020-10-21 23:38:43,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 23:38:43,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:43,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 23:38:43,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-21 23:38:43,174 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-21 23:38:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:43,345 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-10-21 23:38:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-21 23:38:43,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-21 23:38:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:43,347 INFO L225 Difference]: With dead ends: 121 [2020-10-21 23:38:43,347 INFO L226 Difference]: Without dead ends: 115 [2020-10-21 23:38:43,347 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 [2020-10-21 23:38:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-21 23:38:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-10-21 23:38:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 23:38:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 23:38:43,354 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-21 23:38:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:43,355 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 23:38:43,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 23:38:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 23:38:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:38:43,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:43,356 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:43,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:38:43,571 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:43,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2022998328, now seen corresponding path program 3 times [2020-10-21 23:38:43,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:43,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493788547] [2020-10-21 23:38:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:43,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493788547] [2020-10-21 23:38:43,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052703511] [2020-10-21 23:38:43,650 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 [2020-10-21 23:38:43,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:38:43,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:43,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:38:43,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:43,778 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:38:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:43,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:43,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:38:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [804115196] [2020-10-21 23:38:43,794 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:43,795 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:43,799 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-21 23:38:43,799 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:49,043 WARN L193 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:38:49,081 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:38:49,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:38:49,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:38:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:38:49,083 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-21 23:38:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:49,192 INFO L93 Difference]: Finished difference Result 121 states and 289 transitions. [2020-10-21 23:38:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 23:38:49,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-21 23:38:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:49,194 INFO L225 Difference]: With dead ends: 121 [2020-10-21 23:38:49,195 INFO L226 Difference]: Without dead ends: 116 [2020-10-21 23:38:49,195 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 [2020-10-21 23:38:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-21 23:38:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-21 23:38:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-21 23:38:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-21 23:38:49,201 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-10-21 23:38:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:49,201 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-21 23:38:49,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:38:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-21 23:38:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:38:49,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:49,203 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:49,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-21 23:38:49,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2023027158, now seen corresponding path program 4 times [2020-10-21 23:38:49,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:49,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009359381] [2020-10-21 23:38:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:49,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009359381] [2020-10-21 23:38:49,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162135851] [2020-10-21 23:38:49,476 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 [2020-10-21 23:38:49,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:38:49,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:38:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:49,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:38:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:38:49,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [408102564] [2020-10-21 23:38:49,628 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:49,629 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:49,631 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-21 23:38:49,632 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:38:54,292 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:38:54,620 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-21 23:38:54,653 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3030#(and (<= (+ ~i~0 ~j~0) 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:38:54,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:38:54,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:38:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:38:54,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:38:54,655 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 8 states. [2020-10-21 23:38:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:38:54,817 INFO L93 Difference]: Finished difference Result 123 states and 295 transitions. [2020-10-21 23:38:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 23:38:54,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-21 23:38:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:38:54,819 INFO L225 Difference]: With dead ends: 123 [2020-10-21 23:38:54,819 INFO L226 Difference]: Without dead ends: 118 [2020-10-21 23:38:54,820 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 [2020-10-21 23:38:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-21 23:38:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-10-21 23:38:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 23:38:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 237 transitions. [2020-10-21 23:38:54,832 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 237 transitions. Word has length 11 [2020-10-21 23:38:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:38:54,834 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 237 transitions. [2020-10-21 23:38:54,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:38:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 237 transitions. [2020-10-21 23:38:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:38:54,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:38:54,835 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:38:55,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:38:55,037 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:38:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:38:55,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2023028119, now seen corresponding path program 5 times [2020-10-21 23:38:55,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:38:55,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160797550] [2020-10-21 23:38:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:38:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:38:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:55,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160797550] [2020-10-21 23:38:55,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248014208] [2020-10-21 23:38:55,139 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 [2020-10-21 23:38:55,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:38:55,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:38:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:38:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:38:55,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:38:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:38:55,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:38:55,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:38:55,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2050015608] [2020-10-21 23:38:55,332 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:38:55,333 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:38:55,336 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-21 23:38:55,336 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:04,002 WARN L193 SmtUtils]: Spent 8.65 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:39:04,026 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:39:04,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:39:04,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:39:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:39:04,028 INFO L87 Difference]: Start difference. First operand 95 states and 237 transitions. Second operand 7 states. [2020-10-21 23:39:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:04,147 INFO L93 Difference]: Finished difference Result 126 states and 297 transitions. [2020-10-21 23:39:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 23:39:04,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-21 23:39:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:04,149 INFO L225 Difference]: With dead ends: 126 [2020-10-21 23:39:04,149 INFO L226 Difference]: Without dead ends: 121 [2020-10-21 23:39:04,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:39:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-21 23:39:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2020-10-21 23:39:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-21 23:39:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 233 transitions. [2020-10-21 23:39:04,154 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 233 transitions. Word has length 11 [2020-10-21 23:39:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:04,154 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 233 transitions. [2020-10-21 23:39:04,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:39:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 233 transitions. [2020-10-21 23:39:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:39:04,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:04,155 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:04,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:39:04,367 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:04,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2023920888, now seen corresponding path program 6 times [2020-10-21 23:39:04,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:04,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139334054] [2020-10-21 23:39:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:04,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139334054] [2020-10-21 23:39:04,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098592125] [2020-10-21 23:39:04,426 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 [2020-10-21 23:39:04,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 23:39:04,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:04,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:39:04,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:04,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:39:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:04,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:04,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:39:04,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [657787605] [2020-10-21 23:39:04,571 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:04,572 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:04,573 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-21 23:39:04,573 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:06,647 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-21 23:39:06,721 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-21 23:39:06,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-21 23:39:10,873 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:39:10,899 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))] [2020-10-21 23:39:10,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:39:10,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:39:10,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:39:10,900 INFO L87 Difference]: Start difference. First operand 95 states and 233 transitions. Second operand 9 states. [2020-10-21 23:39:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:11,097 INFO L93 Difference]: Finished difference Result 140 states and 330 transitions. [2020-10-21 23:39:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:39:11,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-21 23:39:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:11,099 INFO L225 Difference]: With dead ends: 140 [2020-10-21 23:39:11,099 INFO L226 Difference]: Without dead ends: 135 [2020-10-21 23:39:11,099 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 [2020-10-21 23:39:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-21 23:39:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2020-10-21 23:39:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-21 23:39:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-21 23:39:11,104 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-21 23:39:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:11,105 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-21 23:39:11,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:39:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-21 23:39:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:39:11,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:11,106 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:11,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-21 23:39:11,317 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:11,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2023921849, now seen corresponding path program 7 times [2020-10-21 23:39:11,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:11,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466325503] [2020-10-21 23:39:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:11,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466325503] [2020-10-21 23:39:11,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992871008] [2020-10-21 23:39:11,375 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 [2020-10-21 23:39:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:11,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:39:11,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:11,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:39:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:11,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:11,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:39:11,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [929516004] [2020-10-21 23:39:11,552 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:11,553 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:11,555 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-21 23:39:11,556 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:11,622 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:39:11,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:39:11,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:11,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:39:11,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-21 23:39:11,624 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 7 states. [2020-10-21 23:39:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:11,759 INFO L93 Difference]: Finished difference Result 141 states and 331 transitions. [2020-10-21 23:39:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 23:39:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-21 23:39:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:11,761 INFO L225 Difference]: With dead ends: 141 [2020-10-21 23:39:11,762 INFO L226 Difference]: Without dead ends: 136 [2020-10-21 23:39:11,762 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 [2020-10-21 23:39:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-21 23:39:11,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-10-21 23:39:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-21 23:39:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 237 transitions. [2020-10-21 23:39:11,767 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 237 transitions. Word has length 11 [2020-10-21 23:39:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:11,768 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 237 transitions. [2020-10-21 23:39:11,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:39:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 237 transitions. [2020-10-21 23:39:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:39:11,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:11,769 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:11,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:39:11,984 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2023950679, now seen corresponding path program 8 times [2020-10-21 23:39:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002977850] [2020-10-21 23:39:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:12,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002977850] [2020-10-21 23:39:12,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6194202] [2020-10-21 23:39:12,042 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 [2020-10-21 23:39:12,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:39:12,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:12,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 23:39:12,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:12,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:39:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:12,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:12,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-21 23:39:12,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1147052152] [2020-10-21 23:39:12,231 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:12,232 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:12,234 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-21 23:39:12,234 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:14,606 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:39:14,632 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4541#(and (<= (+ ~i~0 ~j~0) 4) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:39:14,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:39:14,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:39:14,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:39:14,634 INFO L87 Difference]: Start difference. First operand 97 states and 237 transitions. Second operand 8 states. [2020-10-21 23:39:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:14,776 INFO L93 Difference]: Finished difference Result 141 states and 327 transitions. [2020-10-21 23:39:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-21 23:39:14,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-21 23:39:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:14,777 INFO L225 Difference]: With dead ends: 141 [2020-10-21 23:39:14,778 INFO L226 Difference]: Without dead ends: 136 [2020-10-21 23:39:14,778 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 [2020-10-21 23:39:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-21 23:39:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2020-10-21 23:39:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-21 23:39:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-21 23:39:14,783 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-21 23:39:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:14,784 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-21 23:39:14,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:39:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-21 23:39:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:39:14,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:14,785 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:14,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-21 23:39:14,998 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:14,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1984724146, now seen corresponding path program 4 times [2020-10-21 23:39:15,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:15,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045949453] [2020-10-21 23:39:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045949453] [2020-10-21 23:39:15,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427739046] [2020-10-21 23:39:15,102 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 [2020-10-21 23:39:15,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:39:15,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:39:15,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:15,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:39:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:15,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:15,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 23:39:15,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [639522515] [2020-10-21 23:39:15,254 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:15,255 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:15,256 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-21 23:39:15,256 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:17,806 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-21 23:39:20,261 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 27 DAG size of output: 9 [2020-10-21 23:39:21,044 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-21 23:39:21,077 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:39:21,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:39:21,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:21,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:39:21,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-21 23:39:21,079 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-21 23:39:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:21,194 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-21 23:39:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:39:21,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-21 23:39:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:21,196 INFO L225 Difference]: With dead ends: 143 [2020-10-21 23:39:21,196 INFO L226 Difference]: Without dead ends: 138 [2020-10-21 23:39:21,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-21 23:39:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-21 23:39:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-21 23:39:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-21 23:39:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-21 23:39:21,200 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-21 23:39:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:21,201 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-21 23:39:21,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:39:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-21 23:39:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:39:21,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:21,202 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:21,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-21 23:39:21,413 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1071251737, now seen corresponding path program 4 times [2020-10-21 23:39:21,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:21,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888288424] [2020-10-21 23:39:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:21,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888288424] [2020-10-21 23:39:21,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138012950] [2020-10-21 23:39:21,480 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 [2020-10-21 23:39:21,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:39:21,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:21,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:39:21,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:21,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:39:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:21,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:21,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:39:21,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2064372189] [2020-10-21 23:39:21,634 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:21,635 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:21,636 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-21 23:39:21,636 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:22,040 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:39:22,462 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-10-21 23:39:22,518 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))] [2020-10-21 23:39:22,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:39:22,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:39:22,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:39:22,520 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-21 23:39:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:22,776 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-21 23:39:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:39:22,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-21 23:39:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:22,778 INFO L225 Difference]: With dead ends: 149 [2020-10-21 23:39:22,779 INFO L226 Difference]: Without dead ends: 143 [2020-10-21 23:39:22,780 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 [2020-10-21 23:39:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-21 23:39:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-10-21 23:39:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-21 23:39:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-21 23:39:22,784 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-21 23:39:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:22,784 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-21 23:39:22,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:39:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-21 23:39:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:39:22,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:22,785 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:22,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-21 23:39:22,994 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1711561906, now seen corresponding path program 9 times [2020-10-21 23:39:22,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:22,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473123719] [2020-10-21 23:39:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:23,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473123719] [2020-10-21 23:39:23,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145258848] [2020-10-21 23:39:23,063 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 [2020-10-21 23:39:23,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:39:23,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:23,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:39:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:23,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:39:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:39:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2032067900] [2020-10-21 23:39:23,220 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:23,221 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:23,223 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:39:23,223 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:28,595 WARN L193 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-21 23:39:33,481 WARN L193 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:39:33,517 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:39:33,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:39:33,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:33,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:39:33,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:39:33,518 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 8 states. [2020-10-21 23:39:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:33,683 INFO L93 Difference]: Finished difference Result 152 states and 363 transitions. [2020-10-21 23:39:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:39:33,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:39:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:33,690 INFO L225 Difference]: With dead ends: 152 [2020-10-21 23:39:33,691 INFO L226 Difference]: Without dead ends: 147 [2020-10-21 23:39:33,691 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 [2020-10-21 23:39:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-21 23:39:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2020-10-21 23:39:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 23:39:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-21 23:39:33,695 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-10-21 23:39:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:33,696 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-21 23:39:33,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:39:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-21 23:39:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:39:33,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:33,697 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:33,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 23:39:33,902 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1711533076, now seen corresponding path program 10 times [2020-10-21 23:39:33,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:33,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078380512] [2020-10-21 23:39:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:33,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078380512] [2020-10-21 23:39:33,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26771639] [2020-10-21 23:39:33,975 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 [2020-10-21 23:39:34,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:39:34,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:39:34,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:34,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:39:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:35,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:35,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-21 23:39:35,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1295082651] [2020-10-21 23:39:35,347 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:35,348 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:35,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:39:35,350 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:39:35,730 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:39:42,244 WARN L193 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:39:48,815 WARN L193 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:39:48,840 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6211#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-21 23:39:48,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:39:48,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:39:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:39:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2020-10-21 23:39:48,841 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 9 states. [2020-10-21 23:39:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:39:57,182 INFO L93 Difference]: Finished difference Result 156 states and 370 transitions. [2020-10-21 23:39:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:39:57,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-21 23:39:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:39:57,184 INFO L225 Difference]: With dead ends: 156 [2020-10-21 23:39:57,184 INFO L226 Difference]: Without dead ends: 151 [2020-10-21 23:39:57,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=128, Invalid=287, Unknown=5, NotChecked=0, Total=420 [2020-10-21 23:39:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-21 23:39:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 112. [2020-10-21 23:39:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 23:39:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-10-21 23:39:57,189 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-10-21 23:39:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:39:57,189 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-10-21 23:39:57,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:39:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-10-21 23:39:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:39:57,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:39:57,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:39:57,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:39:57,397 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:39:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:39:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1711532115, now seen corresponding path program 11 times [2020-10-21 23:39:57,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:39:57,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552692357] [2020-10-21 23:39:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:39:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:39:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:57,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552692357] [2020-10-21 23:39:57,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883684253] [2020-10-21 23:39:57,474 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 [2020-10-21 23:39:57,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:39:57,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:39:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:39:57,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:39:57,621 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:39:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:39:57,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:39:57,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:39:57,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1235671322] [2020-10-21 23:39:57,638 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:39:57,639 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:39:57,641 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-21 23:39:57,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:04,701 WARN L193 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:40:04,746 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:40:04,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:40:04,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:40:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:40:04,747 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 8 states. [2020-10-21 23:40:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:04,910 INFO L93 Difference]: Finished difference Result 148 states and 355 transitions. [2020-10-21 23:40:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:04,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:40:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:04,912 INFO L225 Difference]: With dead ends: 148 [2020-10-21 23:40:04,913 INFO L226 Difference]: Without dead ends: 143 [2020-10-21 23:40:04,913 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 [2020-10-21 23:40:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-21 23:40:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-10-21 23:40:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-21 23:40:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 274 transitions. [2020-10-21 23:40:04,918 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 274 transitions. Word has length 12 [2020-10-21 23:40:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:04,918 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 274 transitions. [2020-10-21 23:40:04,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:40:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 274 transitions. [2020-10-21 23:40:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:04,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:04,919 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:05,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:40:05,132 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1710639346, now seen corresponding path program 12 times [2020-10-21 23:40:05,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:05,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736180289] [2020-10-21 23:40:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:05,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736180289] [2020-10-21 23:40:05,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148219150] [2020-10-21 23:40:05,200 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 [2020-10-21 23:40:05,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 23:40:05,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:05,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:40:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:05,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:05,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:05,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [653972832] [2020-10-21 23:40:05,367 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:05,368 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:05,371 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:40:05,371 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:07,454 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:40:09,573 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-21 23:40:09,593 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))] [2020-10-21 23:40:09,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 23:40:09,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 23:40:09,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:40:09,594 INFO L87 Difference]: Start difference. First operand 111 states and 274 transitions. Second operand 10 states. [2020-10-21 23:40:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:09,808 INFO L93 Difference]: Finished difference Result 154 states and 369 transitions. [2020-10-21 23:40:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:09,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-21 23:40:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:09,810 INFO L225 Difference]: With dead ends: 154 [2020-10-21 23:40:09,810 INFO L226 Difference]: Without dead ends: 149 [2020-10-21 23:40:09,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-21 23:40:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-21 23:40:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-21 23:40:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 23:40:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2020-10-21 23:40:09,816 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 12 [2020-10-21 23:40:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:09,816 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2020-10-21 23:40:09,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 23:40:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2020-10-21 23:40:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:09,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:09,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:10,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:40:10,029 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1710638385, now seen corresponding path program 13 times [2020-10-21 23:40:10,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:10,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058620872] [2020-10-21 23:40:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:10,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058620872] [2020-10-21 23:40:10,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706199718] [2020-10-21 23:40:10,098 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 [2020-10-21 23:40:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:10,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:10,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:10,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:40:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:10,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:10,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:10,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [414726727] [2020-10-21 23:40:10,259 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:10,260 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:10,261 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-21 23:40:10,262 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:14,832 WARN L193 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:40:14,853 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:40:14,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:40:14,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:14,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:40:14,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:40:14,855 INFO L87 Difference]: Start difference. First operand 114 states and 287 transitions. Second operand 8 states. [2020-10-21 23:40:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:15,055 INFO L93 Difference]: Finished difference Result 146 states and 353 transitions. [2020-10-21 23:40:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:15,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:40:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:15,057 INFO L225 Difference]: With dead ends: 146 [2020-10-21 23:40:15,058 INFO L226 Difference]: Without dead ends: 141 [2020-10-21 23:40:15,058 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 [2020-10-21 23:40:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-21 23:40:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-10-21 23:40:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-21 23:40:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-21 23:40:15,063 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 12 [2020-10-21 23:40:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:15,063 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-21 23:40:15,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:40:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-21 23:40:15,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:15,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:15,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:15,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-21 23:40:15,270 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:15,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:15,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1710609555, now seen corresponding path program 14 times [2020-10-21 23:40:15,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:15,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711070938] [2020-10-21 23:40:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:15,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711070938] [2020-10-21 23:40:15,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845282950] [2020-10-21 23:40:15,367 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 [2020-10-21 23:40:15,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:40:15,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:15,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:15,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:15,496 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:40:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:15,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:15,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:15,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [135318270] [2020-10-21 23:40:15,534 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:15,535 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:15,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-21 23:40:15,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:15,932 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:40:16,011 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7954#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ ~i~0 ~j~0) 7))] [2020-10-21 23:40:16,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:40:16,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:40:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-21 23:40:16,013 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 9 states. [2020-10-21 23:40:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:16,220 INFO L93 Difference]: Finished difference Result 149 states and 359 transitions. [2020-10-21 23:40:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:16,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-21 23:40:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:16,222 INFO L225 Difference]: With dead ends: 149 [2020-10-21 23:40:16,223 INFO L226 Difference]: Without dead ends: 144 [2020-10-21 23:40:16,223 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 [2020-10-21 23:40:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-21 23:40:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-21 23:40:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-21 23:40:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 284 transitions. [2020-10-21 23:40:16,227 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 284 transitions. Word has length 12 [2020-10-21 23:40:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:16,227 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 284 transitions. [2020-10-21 23:40:16,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:40:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 284 transitions. [2020-10-21 23:40:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:16,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:16,228 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:16,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-21 23:40:16,439 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:16,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:16,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1710608594, now seen corresponding path program 15 times [2020-10-21 23:40:16,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:16,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502472018] [2020-10-21 23:40:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:16,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502472018] [2020-10-21 23:40:16,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966143495] [2020-10-21 23:40:16,508 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 [2020-10-21 23:40:16,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:40:16,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:16,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:16,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:16,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:40:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:16,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:16,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:16,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [822990170] [2020-10-21 23:40:16,689 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:16,690 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:16,692 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-21 23:40:16,692 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:21,326 WARN L193 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:40:21,357 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:40:21,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:40:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:40:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:40:21,359 INFO L87 Difference]: Start difference. First operand 113 states and 284 transitions. Second operand 8 states. [2020-10-21 23:40:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:21,550 INFO L93 Difference]: Finished difference Result 149 states and 352 transitions. [2020-10-21 23:40:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:21,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:40:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:21,552 INFO L225 Difference]: With dead ends: 149 [2020-10-21 23:40:21,552 INFO L226 Difference]: Without dead ends: 144 [2020-10-21 23:40:21,552 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 [2020-10-21 23:40:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-21 23:40:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-21 23:40:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-21 23:40:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-21 23:40:21,556 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-10-21 23:40:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:21,557 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-21 23:40:21,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:40:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-21 23:40:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:21,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:21,558 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:21,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-21 23:40:21,767 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:21,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1682933716, now seen corresponding path program 16 times [2020-10-21 23:40:21,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:21,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715042959] [2020-10-21 23:40:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:21,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715042959] [2020-10-21 23:40:21,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019626477] [2020-10-21 23:40:21,841 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 [2020-10-21 23:40:21,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:40:21,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:21,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:21,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:21,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:40:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:21,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:21,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:21,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1950586620] [2020-10-21 23:40:21,982 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:21,983 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:21,985 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-21 23:40:21,985 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:22,396 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:40:22,843 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-21 23:40:22,894 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-21 23:40:22,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-21 23:40:25,018 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:40:25,019 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))] [2020-10-21 23:40:25,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:40:25,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:25,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:40:25,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:40:25,020 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 11 states. [2020-10-21 23:40:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:25,342 INFO L93 Difference]: Finished difference Result 174 states and 410 transitions. [2020-10-21 23:40:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-21 23:40:25,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-21 23:40:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:25,347 INFO L225 Difference]: With dead ends: 174 [2020-10-21 23:40:25,347 INFO L226 Difference]: Without dead ends: 169 [2020-10-21 23:40:25,348 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 [2020-10-21 23:40:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-21 23:40:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 118. [2020-10-21 23:40:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-21 23:40:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-21 23:40:25,352 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-21 23:40:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:25,352 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-21 23:40:25,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:40:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-21 23:40:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:25,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:25,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:25,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 23:40:25,554 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1682932755, now seen corresponding path program 17 times [2020-10-21 23:40:25,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:25,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620679813] [2020-10-21 23:40:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:25,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620679813] [2020-10-21 23:40:25,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192262950] [2020-10-21 23:40:25,621 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 [2020-10-21 23:40:25,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 23:40:25,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:25,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:25,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:40:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:25,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:25,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:25,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [600901114] [2020-10-21 23:40:25,757 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:25,758 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:25,760 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:40:25,760 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:27,878 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:40:27,879 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:40:27,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:40:27,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:40:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:40:27,880 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-21 23:40:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:28,087 INFO L93 Difference]: Finished difference Result 174 states and 412 transitions. [2020-10-21 23:40:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:28,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:40:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:28,089 INFO L225 Difference]: With dead ends: 174 [2020-10-21 23:40:28,089 INFO L226 Difference]: Without dead ends: 169 [2020-10-21 23:40:28,089 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 [2020-10-21 23:40:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-21 23:40:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 117. [2020-10-21 23:40:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-21 23:40:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 290 transitions. [2020-10-21 23:40:28,093 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 290 transitions. Word has length 12 [2020-10-21 23:40:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:28,094 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 290 transitions. [2020-10-21 23:40:28,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:40:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 290 transitions. [2020-10-21 23:40:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:28,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:28,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:28,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-21 23:40:28,305 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1682903925, now seen corresponding path program 18 times [2020-10-21 23:40:28,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:28,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858393350] [2020-10-21 23:40:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:28,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858393350] [2020-10-21 23:40:28,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878497117] [2020-10-21 23:40:28,380 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 [2020-10-21 23:40:28,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-21 23:40:28,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:28,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:28,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:40:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:28,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:28,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:28,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1848669538] [2020-10-21 23:40:28,516 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:28,517 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:28,519 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-21 23:40:28,519 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:30,587 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:40:32,724 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:40:32,725 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9770#(and (<= (+ ~i~0 ~j~0) 8) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:40:32,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:40:32,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:40:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-21 23:40:32,726 INFO L87 Difference]: Start difference. First operand 117 states and 290 transitions. Second operand 9 states. [2020-10-21 23:40:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:32,940 INFO L93 Difference]: Finished difference Result 170 states and 401 transitions. [2020-10-21 23:40:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:32,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-21 23:40:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:32,942 INFO L225 Difference]: With dead ends: 170 [2020-10-21 23:40:32,942 INFO L226 Difference]: Without dead ends: 165 [2020-10-21 23:40:32,943 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 [2020-10-21 23:40:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-21 23:40:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-21 23:40:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-21 23:40:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-21 23:40:32,947 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-21 23:40:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:32,947 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-21 23:40:32,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:40:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-21 23:40:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:32,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:32,948 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:33,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:40:33,160 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902964, now seen corresponding path program 19 times [2020-10-21 23:40:33,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:33,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750845143] [2020-10-21 23:40:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:33,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750845143] [2020-10-21 23:40:33,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121839366] [2020-10-21 23:40:33,244 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 [2020-10-21 23:40:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:33,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:33,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:33,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:40:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:33,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:33,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:33,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [485661350] [2020-10-21 23:40:33,388 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:33,390 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:33,392 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:40:33,392 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:37,384 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:40:37,385 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:40:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:40:37,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:40:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:40:37,386 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 8 states. [2020-10-21 23:40:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:37,600 INFO L93 Difference]: Finished difference Result 170 states and 403 transitions. [2020-10-21 23:40:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:40:37,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-21 23:40:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:37,602 INFO L225 Difference]: With dead ends: 170 [2020-10-21 23:40:37,602 INFO L226 Difference]: Without dead ends: 165 [2020-10-21 23:40:37,603 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 [2020-10-21 23:40:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-21 23:40:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 116. [2020-10-21 23:40:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-21 23:40:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 285 transitions. [2020-10-21 23:40:37,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 285 transitions. Word has length 12 [2020-10-21 23:40:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:37,607 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 285 transitions. [2020-10-21 23:40:37,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:40:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 285 transitions. [2020-10-21 23:40:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:37,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:37,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:37,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 23:40:37,819 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1682010195, now seen corresponding path program 20 times [2020-10-21 23:40:37,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:37,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44770526] [2020-10-21 23:40:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:37,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44770526] [2020-10-21 23:40:37,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419775072] [2020-10-21 23:40:37,890 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 [2020-10-21 23:40:37,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:40:37,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:37,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:40:37,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:38,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:40:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:38,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:38,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-21 23:40:38,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1221325790] [2020-10-21 23:40:38,045 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:38,046 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:38,048 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-21 23:40:38,048 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:40,133 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:40:47,193 WARN L193 SmtUtils]: Spent 6.98 s on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2020-10-21 23:40:48,002 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2020-10-21 23:40:50,068 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:40:50,096 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))] [2020-10-21 23:40:50,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 23:40:50,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:40:50,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 23:40:50,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:40:50,098 INFO L87 Difference]: Start difference. First operand 116 states and 285 transitions. Second operand 10 states. [2020-10-21 23:40:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:40:50,337 INFO L93 Difference]: Finished difference Result 183 states and 422 transitions. [2020-10-21 23:40:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:40:50,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-21 23:40:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:40:50,339 INFO L225 Difference]: With dead ends: 183 [2020-10-21 23:40:50,339 INFO L226 Difference]: Without dead ends: 178 [2020-10-21 23:40:50,339 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 [2020-10-21 23:40:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-21 23:40:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2020-10-21 23:40:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-21 23:40:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-21 23:40:50,346 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-21 23:40:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:40:50,346 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-21 23:40:50,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 23:40:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-21 23:40:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:40:50,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:40:50,347 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:40:50,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-21 23:40:50,559 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:40:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:40:50,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1396877225, now seen corresponding path program 5 times [2020-10-21 23:40:50,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:40:50,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904528384] [2020-10-21 23:40:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:40:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:40:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:50,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904528384] [2020-10-21 23:40:50,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332810486] [2020-10-21 23:40:50,656 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 [2020-10-21 23:40:50,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 23:40:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:40:50,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:40:50,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:40:50,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:40:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:40:50,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:40:50,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:40:50,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1227337319] [2020-10-21 23:40:50,856 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:40:50,857 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:40:50,859 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-21 23:40:50,859 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:40:52,685 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 38 DAG size of output: 9 [2020-10-21 23:40:59,290 WARN L193 SmtUtils]: Spent 6.60 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-21 23:41:00,156 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 9 [2020-10-21 23:41:03,667 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-21 23:41:10,603 WARN L193 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 37 DAG size of output: 7 [2020-10-21 23:41:12,679 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 22 DAG size of output: 6 [2020-10-21 23:41:12,691 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:41:12,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:41:12,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:12,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:41:12,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:41:12,692 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-21 23:41:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:12,845 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-21 23:41:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:41:12,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-21 23:41:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:12,847 INFO L225 Difference]: With dead ends: 164 [2020-10-21 23:41:12,848 INFO L226 Difference]: Without dead ends: 159 [2020-10-21 23:41:12,849 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 [2020-10-21 23:41:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-21 23:41:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-21 23:41:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-21 23:41:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-21 23:41:12,853 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-21 23:41:12,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:12,853 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-21 23:41:12,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:41:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-21 23:41:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:41:12,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:12,854 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:13,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:41:13,066 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:13,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1150962717, now seen corresponding path program 5 times [2020-10-21 23:41:13,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:13,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393887350] [2020-10-21 23:41:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:13,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393887350] [2020-10-21 23:41:13,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854212342] [2020-10-21 23:41:13,137 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 [2020-10-21 23:41:13,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-21 23:41:13,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:41:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:13,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:41:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:13,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:13,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:41:13,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1411248280] [2020-10-21 23:41:13,319 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:13,320 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:13,322 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-21 23:41:13,322 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:41:13,584 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))] [2020-10-21 23:41:13,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 23:41:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 23:41:13,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:41:13,585 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-21 23:41:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:13,916 INFO L93 Difference]: Finished difference Result 175 states and 416 transitions. [2020-10-21 23:41:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 23:41:13,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-21 23:41:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:13,918 INFO L225 Difference]: With dead ends: 175 [2020-10-21 23:41:13,918 INFO L226 Difference]: Without dead ends: 169 [2020-10-21 23:41:13,919 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 [2020-10-21 23:41:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-21 23:41:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-21 23:41:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 23:41:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 23:41:13,924 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-21 23:41:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:13,924 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 23:41:13,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 23:41:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 23:41:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:41:13,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:13,925 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:14,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:41:14,139 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1518812168, now seen corresponding path program 21 times [2020-10-21 23:41:14,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:14,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662999168] [2020-10-21 23:41:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:14,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662999168] [2020-10-21 23:41:14,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113566510] [2020-10-21 23:41:14,217 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 [2020-10-21 23:41:14,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 23:41:14,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:41:14,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:14,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:14,398 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:41:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:14,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:14,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:41:14,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1393422177] [2020-10-21 23:41:14,411 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:14,412 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:14,414 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-21 23:41:14,414 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:41:21,534 WARN L193 SmtUtils]: Spent 7.10 s on a formula simplification. DAG size of input: 42 DAG size of output: 9 [2020-10-21 23:41:24,672 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:41:25,459 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:41:25,477 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:41:25,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:41:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:41:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:41:25,479 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-21 23:41:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:25,663 INFO L93 Difference]: Finished difference Result 183 states and 437 transitions. [2020-10-21 23:41:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:41:25,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-21 23:41:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:25,666 INFO L225 Difference]: With dead ends: 183 [2020-10-21 23:41:25,666 INFO L226 Difference]: Without dead ends: 178 [2020-10-21 23:41:25,667 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 [2020-10-21 23:41:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-21 23:41:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-21 23:41:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 23:41:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-21 23:41:25,671 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-21 23:41:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:25,671 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-21 23:41:25,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:41:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-21 23:41:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:41:25,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:25,672 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:25,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-21 23:41:25,884 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1518783338, now seen corresponding path program 22 times [2020-10-21 23:41:25,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:25,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699294300] [2020-10-21 23:41:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:25,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699294300] [2020-10-21 23:41:25,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331343045] [2020-10-21 23:41:25,971 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 [2020-10-21 23:41:26,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:41:26,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:41:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:26,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:26,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:41:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:27,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:27,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:41:27,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [379553652] [2020-10-21 23:41:27,440 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:27,441 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:27,443 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-21 23:41:27,443 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:41:32,227 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:41:32,283 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12665#(and (<= (+ ~i~0 ~j~0) 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:41:32,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 23:41:32,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 23:41:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-21 23:41:32,284 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-21 23:41:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:38,280 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-21 23:41:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:41:38,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-21 23:41:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:38,282 INFO L225 Difference]: With dead ends: 192 [2020-10-21 23:41:38,282 INFO L226 Difference]: Without dead ends: 187 [2020-10-21 23:41:38,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=168, Invalid=378, Unknown=6, NotChecked=0, Total=552 [2020-10-21 23:41:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-21 23:41:38,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 131. [2020-10-21 23:41:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 23:41:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-10-21 23:41:38,286 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-10-21 23:41:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:38,287 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-10-21 23:41:38,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 23:41:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-10-21 23:41:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:41:38,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:38,288 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:38,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:41:38,492 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1518782377, now seen corresponding path program 23 times [2020-10-21 23:41:38,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:38,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857336032] [2020-10-21 23:41:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:38,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857336032] [2020-10-21 23:41:38,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209071796] [2020-10-21 23:41:38,569 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 [2020-10-21 23:41:38,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:41:38,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:41:38,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:38,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:41:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:38,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:38,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:41:38,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [532019536] [2020-10-21 23:41:38,763 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:38,765 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:38,768 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-21 23:41:38,768 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:41:38,905 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:41:38,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:41:38,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:38,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:41:38,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:41:38,907 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 9 states. [2020-10-21 23:41:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:39,187 INFO L93 Difference]: Finished difference Result 184 states and 441 transitions. [2020-10-21 23:41:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:41:39,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-21 23:41:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:39,190 INFO L225 Difference]: With dead ends: 184 [2020-10-21 23:41:39,190 INFO L226 Difference]: Without dead ends: 179 [2020-10-21 23:41:39,191 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 [2020-10-21 23:41:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-21 23:41:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2020-10-21 23:41:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-21 23:41:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-10-21 23:41:39,197 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-10-21 23:41:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:39,197 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-10-21 23:41:39,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:41:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-10-21 23:41:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:41:39,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:39,199 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:39,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-21 23:41:39,413 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1517889608, now seen corresponding path program 24 times [2020-10-21 23:41:39,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:39,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987639423] [2020-10-21 23:41:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:39,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987639423] [2020-10-21 23:41:39,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874150546] [2020-10-21 23:41:39,511 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 [2020-10-21 23:41:39,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-21 23:41:39,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:41:39,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:39,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:39,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:41:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:39,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:39,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:41:39,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [777534027] [2020-10-21 23:41:39,780 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:39,781 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:39,783 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-21 23:41:39,784 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:41:40,296 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:41:40,764 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-21 23:41:43,882 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:41:50,056 WARN L193 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:41:50,079 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))] [2020-10-21 23:41:50,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 23:41:50,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:41:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 23:41:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:41:50,081 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 11 states. [2020-10-21 23:41:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:41:50,366 INFO L93 Difference]: Finished difference Result 192 states and 456 transitions. [2020-10-21 23:41:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:41:50,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-21 23:41:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:41:50,368 INFO L225 Difference]: With dead ends: 192 [2020-10-21 23:41:50,368 INFO L226 Difference]: Without dead ends: 187 [2020-10-21 23:41:50,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2020-10-21 23:41:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-21 23:41:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-10-21 23:41:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-21 23:41:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-21 23:41:50,378 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-10-21 23:41:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:41:50,378 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-21 23:41:50,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 23:41:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-21 23:41:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:41:50,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:41:50,379 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:41:50,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:41:50,590 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:41:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:41:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888647, now seen corresponding path program 25 times [2020-10-21 23:41:50,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:41:50,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783155618] [2020-10-21 23:41:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:41:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783155618] [2020-10-21 23:41:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163713553] [2020-10-21 23:41:50,690 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 [2020-10-21 23:41:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:41:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:41:50,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:41:52,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:41:59,131 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-10-21 23:41:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:41:59,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:41:59,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:41:59,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144439636] [2020-10-21 23:41:59,135 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:41:59,136 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:41:59,139 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-21 23:41:59,139 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:42:05,079 WARN L193 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:42:09,449 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:42:09,473 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:42:09,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:42:09,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:42:09,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:42:09,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2020-10-21 23:42:09,474 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 9 states. [2020-10-21 23:42:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:42:21,961 INFO L93 Difference]: Finished difference Result 183 states and 439 transitions. [2020-10-21 23:42:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:42:21,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-21 23:42:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:42:21,967 INFO L225 Difference]: With dead ends: 183 [2020-10-21 23:42:21,967 INFO L226 Difference]: Without dead ends: 178 [2020-10-21 23:42:21,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=170, Invalid=374, Unknown=8, NotChecked=0, Total=552 [2020-10-21 23:42:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-21 23:42:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 131. [2020-10-21 23:42:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-21 23:42:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-21 23:42:21,971 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-10-21 23:42:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:42:21,971 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-21 23:42:21,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:42:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-21 23:42:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:42:21,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:42:21,973 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:42:22,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 23:42:22,177 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:42:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:42:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1517859817, now seen corresponding path program 26 times [2020-10-21 23:42:22,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:42:22,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950362244] [2020-10-21 23:42:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:42:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:42:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:22,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950362244] [2020-10-21 23:42:22,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603217085] [2020-10-21 23:42:22,257 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 [2020-10-21 23:42:22,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:42:22,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:42:22,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:42:22,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:42:22,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:42:22,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:42:28,645 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2020-10-21 23:42:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:28,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:42:28,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:42:28,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [400004907] [2020-10-21 23:42:28,648 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:42:28,650 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:42:28,652 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-21 23:42:28,652 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:42:30,318 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:42:35,005 WARN L193 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:42:37,080 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 22 [2020-10-21 23:42:37,096 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [14731#(and (<= (+ ~i~0 ~j~0) 10) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-21 23:42:37,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 23:42:37,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:42:37,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 23:42:37,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2020-10-21 23:42:37,098 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 10 states. [2020-10-21 23:42:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:42:47,437 INFO L93 Difference]: Finished difference Result 186 states and 445 transitions. [2020-10-21 23:42:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:42:47,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-21 23:42:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:42:47,439 INFO L225 Difference]: With dead ends: 186 [2020-10-21 23:42:47,439 INFO L226 Difference]: Without dead ends: 181 [2020-10-21 23:42:47,440 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 [2020-10-21 23:42:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-21 23:42:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-10-21 23:42:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-21 23:42:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 326 transitions. [2020-10-21 23:42:47,443 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 326 transitions. Word has length 13 [2020-10-21 23:42:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:42:47,443 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 326 transitions. [2020-10-21 23:42:47,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 23:42:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 326 transitions. [2020-10-21 23:42:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:42:47,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:42:47,444 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:42:47,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-21 23:42:47,655 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:42:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:42:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1517858856, now seen corresponding path program 27 times [2020-10-21 23:42:47,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:42:47,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564639807] [2020-10-21 23:42:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:42:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:42:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:47,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564639807] [2020-10-21 23:42:47,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525825376] [2020-10-21 23:42:47,734 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 [2020-10-21 23:42:47,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:42:47,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:42:47,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:42:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:42:47,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 23:42:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:47,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:42:47,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:42:47,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [618731295] [2020-10-21 23:42:47,928 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:42:47,929 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:42:47,931 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-21 23:42:47,931 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:42:51,948 WARN L193 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-10-21 23:42:56,221 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 37 DAG size of output: 6 [2020-10-21 23:42:56,244 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-21 23:42:56,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:42:56,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:42:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:42:56,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:42:56,246 INFO L87 Difference]: Start difference. First operand 130 states and 326 transitions. Second operand 9 states. [2020-10-21 23:42:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:42:56,508 INFO L93 Difference]: Finished difference Result 176 states and 422 transitions. [2020-10-21 23:42:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 23:42:56,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-21 23:42:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:42:56,511 INFO L225 Difference]: With dead ends: 176 [2020-10-21 23:42:56,511 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 23:42:56,511 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 [2020-10-21 23:42:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 23:42:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2020-10-21 23:42:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-21 23:42:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-21 23:42:56,514 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-21 23:42:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:42:56,515 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-21 23:42:56,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:42:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-21 23:42:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:42:56,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:42:56,515 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:42:56,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-21 23:42:56,716 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:42:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:42:56,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1490183978, now seen corresponding path program 28 times [2020-10-21 23:42:56,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:42:56,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873967097] [2020-10-21 23:42:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:42:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:42:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:56,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873967097] [2020-10-21 23:42:56,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514527954] [2020-10-21 23:42:56,796 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 [2020-10-21 23:42:56,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:42:56,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:42:56,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 23:42:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:42:56,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-21 23:42:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:42:56,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:42:56,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-21 23:42:56,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1263396692] [2020-10-21 23:42:56,982 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-21 23:42:56,983 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-21 23:42:56,984 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-21 23:42:56,984 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-21 23:42:57,541 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 23 Received shutdown request... [2020-10-21 23:42:59,649 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-21 23:42:59,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 23:42:59,852 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 23:42:59,856 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 23:42:59,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:42:59 BasicIcfg [2020-10-21 23:42:59,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:42:59,857 INFO L168 Benchmark]: Toolchain (without parser) took 280145.86 ms. Allocated memory was 139.5 MB in the beginning and 254.3 MB in the end (delta: 114.8 MB). Free memory was 101.6 MB in the beginning and 207.3 MB in the end (delta: -105.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,857 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 159.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 203.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,858 INFO L168 Benchmark]: Boogie Preprocessor took 29.75 ms. Allocated memory is still 203.4 MB. Free memory was 157.4 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,858 INFO L168 Benchmark]: RCFGBuilder took 449.80 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 133.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:42:59,858 INFO L168 Benchmark]: TraceAbstraction took 278900.18 ms. Allocated memory was 203.4 MB in the beginning and 254.3 MB in the end (delta: 50.9 MB). Free memory was 132.7 MB in the beginning and 207.3 MB in the end (delta: -74.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 23:42:59,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 159.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 203.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.75 ms. Allocated memory is still 203.4 MB. Free memory was 157.4 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.80 ms. Allocated memory is still 203.4 MB. Free memory was 156.0 MB in the beginning and 133.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 278900.18 ms. Allocated memory was 203.4 MB in the beginning and 254.3 MB in the end (delta: 50.9 MB). Free memory was 132.7 MB in the beginning and 207.3 MB in the end (delta: -74.6 MB). There was no memory consumed. 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 analyzing trace of length 14 with TraceHistMax 4,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 278.7s, OverallIterations: 39, TraceHistogramMax: 5, AutomataDifference: 43.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 494 SDtfs, 2177 SDslu, 2506 SDs, 0 SdLazy, 1898 SolverSat, 404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1016 GetRequests, 352 SyntacticMatches, 28 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 62.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=31, 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, 38 MinimizatonAttempts, 1339 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 741 ConstructedInterpolants, 6 QuantifiedInterpolants, 66205 SizeOfPredicates, 33 NumberOfNonLiveVariables, 3171 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 71 InterpolantComputations, 5 PerfectInterpolantSequences, 0/220 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