/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:17:46,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:17:46,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:17:46,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:17:46,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:17:46,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:17:46,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:17:46,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:17:46,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:17:46,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:17:46,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:17:46,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:17:46,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:17:46,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:17:46,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:17:46,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:17:46,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:17:46,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:17:46,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:17:46,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:17:46,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:17:46,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:17:46,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:17:46,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:17:46,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:17:46,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:17:46,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:17:46,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:17:46,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:17:46,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:17:46,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:17:46,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:17:46,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:17:46,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:17:46,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:17:46,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:17:46,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:17:46,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:17:46,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:17:46,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:17:46,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:17:46,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:17:46,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:17:46,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:17:46,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:17:46,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:17:46,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:17:46,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:17:46,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:17:46,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:17:46,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:17:46,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:17:46,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:17:46,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:17:46,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:17:46,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:17:46,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:17:46,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:17:46,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:17:46,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:17:46,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:17:46,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:17:46,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:17:46,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:17:46,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:17:46,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:17:46,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:17:46,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:17:46,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:17:46,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:17:46,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:17:46,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:17:46,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-16 11:17:46,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a408a0f85/5e7c3d12cdaa4fada22cd2f65b0d16c4/FLAGe33d355a3 [2020-10-16 11:17:47,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:17:47,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-16 11:17:47,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a408a0f85/5e7c3d12cdaa4fada22cd2f65b0d16c4/FLAGe33d355a3 [2020-10-16 11:17:47,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a408a0f85/5e7c3d12cdaa4fada22cd2f65b0d16c4 [2020-10-16 11:17:47,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:17:47,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:17:47,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:47,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:17:47,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:17:47,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:47" (1/1) ... [2020-10-16 11:17:47,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222302d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:47, skipping insertion in model container [2020-10-16 11:17:47,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:47" (1/1) ... [2020-10-16 11:17:47,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:17:47,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:17:48,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:48,192 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:17:48,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:48,445 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:17:48,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48 WrapperNode [2020-10-16 11:17:48,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:48,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:48,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:17:48,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:17:48,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:48,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:17:48,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:17:48,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:17:48,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... [2020-10-16 11:17:48,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:17:48,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:17:48,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:17:48,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:17:48,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:17:48,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:17:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:17:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:17:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:17:48,605 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:17:48,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:17:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:17:48,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:17:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:17:48,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:17:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:17:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:17:48,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:17:48,611 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:17:48,973 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:17:48,973 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:17:48,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:48 BoogieIcfgContainer [2020-10-16 11:17:48,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:17:48,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:17:48,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:17:48,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:17:48,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:17:47" (1/3) ... [2020-10-16 11:17:48,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b33f9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:48, skipping insertion in model container [2020-10-16 11:17:48,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:48" (2/3) ... [2020-10-16 11:17:49,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b33f9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:49, skipping insertion in model container [2020-10-16 11:17:49,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:48" (3/3) ... [2020-10-16 11:17:49,004 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-10-16 11:17:49,014 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:17:49,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:17:49,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:17:49,022 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:17:49,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,059 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:49,080 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:17:49,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:17:49,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:17:49,121 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:17:49,121 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:17:49,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:17:49,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:17:49,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:17:49,122 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:17:49,122 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:17:49,137 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:17:49,141 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:17:49,144 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:17:49,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 11:17:49,195 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 11:17:49,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:17:49,202 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 11:17:49,205 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:17:50,845 INFO L132 LiptonReduction]: Checked pairs total: 2581 [2020-10-16 11:17:50,846 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 11:17:50,853 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:17:50,880 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:17:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:17:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:17:50,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:50,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:50,893 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:50,900 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-16 11:17:50,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:50,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853621837] [2020-10-16 11:17:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853621837] [2020-10-16 11:17:51,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:17:51,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938557999] [2020-10-16 11:17:51,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:51,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:51,153 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:17:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,208 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:17:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:51,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:17:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,228 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:17:51,228 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:17:51,230 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 [2020-10-16 11:17:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:17:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:17:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:17:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:17:51,301 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:17:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,302 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:17:51,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:17:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:17:51,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:17:51,305 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-16 11:17:51,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015525081] [2020-10-16 11:17:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015525081] [2020-10-16 11:17:51,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:51,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009768750] [2020-10-16 11:17:51,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:51,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:51,424 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 11:17:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,457 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-16 11:17:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:51,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:17:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,460 INFO L225 Difference]: With dead ends: 296 [2020-10-16 11:17:51,460 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 11:17:51,461 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 [2020-10-16 11:17:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 11:17:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-16 11:17:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-16 11:17:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-16 11:17:51,479 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-16 11:17:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,480 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-16 11:17:51,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-16 11:17:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:17:51,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:17:51,482 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-16 11:17:51,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111016365] [2020-10-16 11:17:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111016365] [2020-10-16 11:17:51,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:51,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522233435] [2020-10-16 11:17:51,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:51,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:51,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:51,534 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-16 11:17:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,565 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-16 11:17:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:17:51,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 11:17:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,568 INFO L225 Difference]: With dead ends: 314 [2020-10-16 11:17:51,568 INFO L226 Difference]: Without dead ends: 182 [2020-10-16 11:17:51,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-16 11:17:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-16 11:17:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 11:17:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-16 11:17:51,580 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-16 11:17:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,580 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-16 11:17:51,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-16 11:17:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:17:51,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:17:51,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-16 11:17:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192576447] [2020-10-16 11:17:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192576447] [2020-10-16 11:17:51,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:51,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582907841] [2020-10-16 11:17:51,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:51,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:51,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:51,638 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-16 11:17:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,658 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-10-16 11:17:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:51,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:17:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,662 INFO L225 Difference]: With dead ends: 176 [2020-10-16 11:17:51,662 INFO L226 Difference]: Without dead ends: 86 [2020-10-16 11:17:51,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-16 11:17:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-16 11:17:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 11:17:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-10-16 11:17:51,677 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-10-16 11:17:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,678 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-10-16 11:17:51,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-10-16 11:17:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:17:51,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:17:51,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778239, now seen corresponding path program 1 times [2020-10-16 11:17:51,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127688288] [2020-10-16 11:17:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127688288] [2020-10-16 11:17:51,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:17:51,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315299884] [2020-10-16 11:17:51,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:51,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:51,749 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-10-16 11:17:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,754 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-10-16 11:17:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:51,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 11:17:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,755 INFO L225 Difference]: With dead ends: 80 [2020-10-16 11:17:51,755 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 11:17:51,756 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 [2020-10-16 11:17:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 11:17:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 11:17:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 11:17:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-16 11:17:51,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-16 11:17:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,762 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-16 11:17:51,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-16 11:17:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:17:51,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:17:51,764 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,764 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-16 11:17:51,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428116451] [2020-10-16 11:17:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428116451] [2020-10-16 11:17:51,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:51,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994564163] [2020-10-16 11:17:51,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:51,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:51,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:51,798 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-16 11:17:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,819 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-16 11:17:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:51,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:17:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,821 INFO L225 Difference]: With dead ends: 104 [2020-10-16 11:17:51,821 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:17:51,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:17:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:17:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:17:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 11:17:51,826 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-16 11:17:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,826 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 11:17:51,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 11:17:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:17:51,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:17:51,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-16 11:17:51,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121938814] [2020-10-16 11:17:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121938814] [2020-10-16 11:17:51,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:51,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411481907] [2020-10-16 11:17:51,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:51,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:51,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:51,880 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-16 11:17:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:51,921 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-16 11:17:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:17:51,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:17:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:51,923 INFO L225 Difference]: With dead ends: 81 [2020-10-16 11:17:51,923 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 11:17:51,924 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 [2020-10-16 11:17:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 11:17:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 11:17:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 11:17:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-16 11:17:51,928 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-16 11:17:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:51,928 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-16 11:17:51,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-16 11:17:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:17:51,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:51,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:51,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:17:51,930 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-16 11:17:51,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:51,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548200672] [2020-10-16 11:17:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:51,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548200672] [2020-10-16 11:17:51,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:51,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:51,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508669491] [2020-10-16 11:17:51,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:17:51,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:17:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:51,997 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-16 11:17:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:52,035 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-16 11:17:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:17:52,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:17:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:52,036 INFO L225 Difference]: With dead ends: 60 [2020-10-16 11:17:52,037 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 11:17:52,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:17:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 11:17:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 11:17:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 11:17:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 11:17:52,039 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-16 11:17:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:52,040 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 11:17:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:17:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 11:17:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:17:52,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:52,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:52,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:17:52,041 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-16 11:17:52,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:52,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331773320] [2020-10-16 11:17:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:52,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331773320] [2020-10-16 11:17:52,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:52,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:17:52,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628440531] [2020-10-16 11:17:52,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:17:52,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:52,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:17:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:17:52,093 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-16 11:17:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:52,136 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 11:17:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:17:52,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:17:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:52,138 INFO L225 Difference]: With dead ends: 42 [2020-10-16 11:17:52,138 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 11:17:52,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:17:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 11:17:52,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 11:17:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 11:17:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 11:17:52,140 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 11:17:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:52,141 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 11:17:52,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:17:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 11:17:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:17:52,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:52,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:52,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:17:52,142 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-16 11:17:52,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:52,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44892181] [2020-10-16 11:17:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:52,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44892181] [2020-10-16 11:17:52,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:52,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:52,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999328937] [2020-10-16 11:17:52,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:52,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:52,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:52,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:52,170 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-16 11:17:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:52,173 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 11:17:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:52,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:17:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:52,174 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:17:52,174 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:17:52,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:17:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:17:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:17:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:17:52,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:17:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:52,176 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:17:52,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:17:52,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:17:52,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:17:52,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:17:52 BasicIcfg [2020-10-16 11:17:52,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:17:52,183 INFO L168 Benchmark]: Toolchain (without parser) took 4417.40 ms. Allocated memory was 136.3 MB in the beginning and 253.2 MB in the end (delta: 116.9 MB). Free memory was 98.0 MB in the beginning and 183.0 MB in the end (delta: -85.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,184 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.86 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 97.6 MB in the beginning and 160.5 MB in the end (delta: -62.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.35 ms. Allocated memory is still 201.9 MB. Free memory was 160.5 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,186 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,187 INFO L168 Benchmark]: RCFGBuilder took 446.92 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 134.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,188 INFO L168 Benchmark]: TraceAbstraction took 3190.74 ms. Allocated memory was 201.9 MB in the beginning and 253.2 MB in the end (delta: 51.4 MB). Free memory was 134.0 MB in the beginning and 183.0 MB in the end (delta: -49.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:52,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.86 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 97.6 MB in the beginning and 160.5 MB in the end (delta: -62.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.35 ms. Allocated memory is still 201.9 MB. Free memory was 160.5 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.19 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.92 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 134.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3190.74 ms. Allocated memory was 201.9 MB in the beginning and 253.2 MB in the end (delta: 51.4 MB). Free memory was 134.0 MB in the beginning and 183.0 MB in the end (delta: -49.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 819 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2581 MoverChecksTotal - PositiveResult [Line: 7]: 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 193 SDtfs, 137 SDslu, 200 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...