/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:36:00,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:36:00,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:36:00,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:36:00,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:36:00,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:36:00,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:36:00,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:36:00,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:36:00,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:36:00,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:36:00,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:36:00,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:36:00,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:36:00,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:36:00,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:36:00,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:36:00,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:36:00,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:36:00,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:36:00,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:36:00,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:36:00,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:36:00,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:36:00,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:36:00,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:36:00,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:36:00,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:36:00,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:36:00,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:36:00,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:36:00,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:36:00,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:36:00,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:36:00,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:36:00,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:36:00,451 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 [2020-11-09 15:36:00,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:36:00,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:36:00,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:36:00,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:36:00,486 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:36:00,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:36:00,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:36:00,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:36:00,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:36:00,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:36:00,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:36:00,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:36:00,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:36:00,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:36:00,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:36:00,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:36:00,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:36:00,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:36:00,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:36:00,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:36:00,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:36:00,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:36:00,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:36:00,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:36:00,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:36:00,491 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:36:00,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:36:00,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:36:00,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:36:00,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:36:00,955 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:36:00,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 15:36:01,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f258fd95/fba356f541a449d0a4e83b053ed0b607/FLAGb1405a1e8 [2020-11-09 15:36:01,801 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:36:01,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 15:36:01,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f258fd95/fba356f541a449d0a4e83b053ed0b607/FLAGb1405a1e8 [2020-11-09 15:36:01,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f258fd95/fba356f541a449d0a4e83b053ed0b607 [2020-11-09 15:36:01,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:36:01,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:36:01,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:36:01,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:36:01,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:36:01,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:36:01" (1/1) ... [2020-11-09 15:36:01,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a0aec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:01, skipping insertion in model container [2020-11-09 15:36:01,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:36:01" (1/1) ... [2020-11-09 15:36:01,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:36:01,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:36:02,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:36:02,462 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:36:02,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:36:02,727 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:36:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02 WrapperNode [2020-11-09 15:36:02,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:36:02,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:36:02,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:36:02,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:36:02,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:36:02,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:36:02,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:36:02,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:36:02,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (1/1) ... [2020-11-09 15:36:02,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:36:02,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:36:02,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:36:02,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:36:02,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (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 [2020-11-09 15:36:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:36:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:36:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:36:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:36:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:36:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:36:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:36:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:36:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:36:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:36:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:36:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:36:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:36:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:36:03,005 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:36:03,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:36:03,576 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:36:03,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:36:03 BoogieIcfgContainer [2020-11-09 15:36:03,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:36:03,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:36:03,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:36:03,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:36:03,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:36:01" (1/3) ... [2020-11-09 15:36:03,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51134bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:36:03, skipping insertion in model container [2020-11-09 15:36:03,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:36:02" (2/3) ... [2020-11-09 15:36:03,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51134bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:36:03, skipping insertion in model container [2020-11-09 15:36:03,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:36:03" (3/3) ... [2020-11-09 15:36:03,588 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-11-09 15:36:03,605 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:36:03,606 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:36:03,610 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:36:03,611 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:36:03,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,651 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:36:03,670 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:36:03,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:36:03,709 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:36:03,709 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:36:03,709 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:36:03,709 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:36:03,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:36:03,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:36:03,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:36:03,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:36:03,739 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:36:03,741 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:36:03,745 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:36:03,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 15:36:03,838 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 15:36:03,839 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:36:03,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:36:03,849 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:36:07,648 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:36:07,763 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:36:07,877 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:36:08,344 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:36:08,453 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:36:08,694 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:36:08,823 INFO L131 LiptonReduction]: Checked pairs total: 3321 [2020-11-09 15:36:08,824 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-09 15:36:08,830 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:36:08,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:36:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:36:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:36:08,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:08,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:08,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:08,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-11-09 15:36:08,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:08,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658871178] [2020-11-09 15:36:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:09,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658871178] [2020-11-09 15:36:09,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:09,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:36:09,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1117596884] [2020-11-09 15:36:09,178 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:09,181 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:09,197 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:36:09,198 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:09,203 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:09,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:36:09,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:09,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:36:09,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,225 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:36:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:09,269 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-09 15:36:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:36:09,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:36:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:09,300 INFO L225 Difference]: With dead ends: 290 [2020-11-09 15:36:09,300 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 15:36:09,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 15:36:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 15:36:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 15:36:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-09 15:36:09,374 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-09 15:36:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:09,376 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-09 15:36:09,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:36:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-09 15:36:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:36:09,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:09,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:09,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:36:09,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash 30655995, now seen corresponding path program 1 times [2020-11-09 15:36:09,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:09,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489668454] [2020-11-09 15:36:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:09,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489668454] [2020-11-09 15:36:09,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:09,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:36:09,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [447430302] [2020-11-09 15:36:09,512 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:09,513 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:09,516 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 15:36:09,516 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:09,551 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:09,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:36:09,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:09,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:36:09,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,554 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-11-09 15:36:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:09,572 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-11-09 15:36:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:36:09,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:36:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:09,583 INFO L225 Difference]: With dead ends: 220 [2020-11-09 15:36:09,583 INFO L226 Difference]: Without dead ends: 220 [2020-11-09 15:36:09,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-09 15:36:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-11-09 15:36:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-11-09 15:36:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-11-09 15:36:09,617 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-11-09 15:36:09,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:09,618 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-11-09 15:36:09,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:36:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-11-09 15:36:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:36:09,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:09,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:09,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:36:09,620 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:09,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1213087086, now seen corresponding path program 1 times [2020-11-09 15:36:09,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:09,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819326364] [2020-11-09 15:36:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:09,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819326364] [2020-11-09 15:36:09,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:09,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:36:09,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1511713837] [2020-11-09 15:36:09,673 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:09,674 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:09,677 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 30 transitions. [2020-11-09 15:36:09,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:09,716 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:09,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:36:09,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:36:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,718 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-11-09 15:36:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:09,734 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-11-09 15:36:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:36:09,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:36:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:09,738 INFO L225 Difference]: With dead ends: 296 [2020-11-09 15:36:09,738 INFO L226 Difference]: Without dead ends: 236 [2020-11-09 15:36:09,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-09 15:36:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-11-09 15:36:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-09 15:36:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-11-09 15:36:09,754 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-11-09 15:36:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-11-09 15:36:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:36:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-11-09 15:36:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:36:09,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:09,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:09,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:36:09,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1780128980, now seen corresponding path program 1 times [2020-11-09 15:36:09,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:09,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550645865] [2020-11-09 15:36:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:09,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550645865] [2020-11-09 15:36:09,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:09,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:36:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [980936638] [2020-11-09 15:36:09,821 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:09,822 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:09,824 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 37 transitions. [2020-11-09 15:36:09,825 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:10,014 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:10,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:36:10,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:10,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:36:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:10,016 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-11-09 15:36:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:10,026 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-11-09 15:36:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:36:10,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:36:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:10,034 INFO L225 Difference]: With dead ends: 203 [2020-11-09 15:36:10,035 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 15:36:10,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 15:36:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-09 15:36:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-09 15:36:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-11-09 15:36:10,056 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-11-09 15:36:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:10,057 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-11-09 15:36:10,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:36:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-11-09 15:36:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:36:10,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:10,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:10,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:36:10,062 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -650577484, now seen corresponding path program 1 times [2020-11-09 15:36:10,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:10,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351664811] [2020-11-09 15:36:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:10,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351664811] [2020-11-09 15:36:10,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:10,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:36:10,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1780055178] [2020-11-09 15:36:10,159 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:10,161 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:10,164 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 57 transitions. [2020-11-09 15:36:10,164 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:10,282 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:10,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:36:10,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:10,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:36:10,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:36:10,284 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-11-09 15:36:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:10,305 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-11-09 15:36:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:36:10,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:36:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:10,307 INFO L225 Difference]: With dead ends: 240 [2020-11-09 15:36:10,308 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 15:36:10,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:36:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 15:36:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 15:36:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 15:36:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-11-09 15:36:10,314 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-11-09 15:36:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:10,314 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-11-09 15:36:10,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:36:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-11-09 15:36:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:36:10,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:10,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:10,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:36:10,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:10,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-11-09 15:36:10,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:10,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878868546] [2020-11-09 15:36:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:10,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878868546] [2020-11-09 15:36:10,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:10,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:36:10,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [374576341] [2020-11-09 15:36:10,389 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:10,390 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:10,394 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 15:36:10,394 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:10,406 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,459 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,474 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,490 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,508 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,520 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,591 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3965#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:36:10,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:36:10,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:36:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:36:10,593 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 5 states. [2020-11-09 15:36:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:10,660 INFO L93 Difference]: Finished difference Result 137 states and 287 transitions. [2020-11-09 15:36:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:36:10,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:36:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:10,662 INFO L225 Difference]: With dead ends: 137 [2020-11-09 15:36:10,662 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 15:36:10,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:36:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 15:36:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 15:36:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 15:36:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-11-09 15:36:10,666 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 12 [2020-11-09 15:36:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:10,667 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-11-09 15:36:10,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:36:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-11-09 15:36:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:36:10,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:10,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:10,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:36:10,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-11-09 15:36:10,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:10,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172874004] [2020-11-09 15:36:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:10,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172874004] [2020-11-09 15:36:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:36:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1484303845] [2020-11-09 15:36:10,721 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:10,723 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:10,725 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-11-09 15:36:10,726 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:10,727 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:36:10,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:36:10,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:36:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:10,728 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-11-09 15:36:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:10,737 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-11-09 15:36:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:36:10,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-09 15:36:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:10,739 INFO L225 Difference]: With dead ends: 101 [2020-11-09 15:36:10,739 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 15:36:10,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:36:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 15:36:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-09 15:36:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-09 15:36:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-11-09 15:36:10,742 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-11-09 15:36:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:10,742 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-11-09 15:36:10,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:36:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-11-09 15:36:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:36:10,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:36:10,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:36:10,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:36:10,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:36:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:36:10,744 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-11-09 15:36:10,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:36:10,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992278144] [2020-11-09 15:36:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:36:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:36:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:36:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992278144] [2020-11-09 15:36:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:36:10,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:36:10,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [558415380] [2020-11-09 15:36:10,807 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:36:10,808 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:36:10,815 INFO L252 McrAutomatonBuilder]: Finished intersection with 57 states and 102 transitions. [2020-11-09 15:36:10,815 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:36:10,824 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:36:10,956 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4555#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:36:10,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:36:10,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:36:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:36:10,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:36:10,958 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 7 states. [2020-11-09 15:36:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:36:10,997 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-11-09 15:36:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:36:10,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:36:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:36:10,997 INFO L225 Difference]: With dead ends: 67 [2020-11-09 15:36:10,997 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:36:10,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:36:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:36:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:36:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:36:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:36:10,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 15:36:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:36:10,999 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:36:10,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:36:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:36:10,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:36:10,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:36:11,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:36:11 BasicIcfg [2020-11-09 15:36:11,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:36:11,005 INFO L168 Benchmark]: Toolchain (without parser) took 9147.97 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 100.3 MB in the beginning and 80.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,006 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:36:11,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.19 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 99.5 MB in the beginning and 124.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,008 INFO L168 Benchmark]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 121.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,009 INFO L168 Benchmark]: RCFGBuilder took 680.84 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 99.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,010 INFO L168 Benchmark]: TraceAbstraction took 7422.78 ms. Allocated memory is still 151.0 MB. Free memory was 99.0 MB in the beginning and 80.4 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-11-09 15:36:11,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 871.19 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 99.5 MB in the beginning and 124.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 96.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 121.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.84 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 99.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7422.78 ms. Allocated memory is still 151.0 MB. Free memory was 99.0 MB in the beginning and 80.4 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 803 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 149 SDtfs, 83 SDslu, 152 SDs, 0 SdLazy, 67 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 2465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...