/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:38:02,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:38:02,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:38:02,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:38:02,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:38:02,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:38:02,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:38:02,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:38:02,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:38:02,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:38:02,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:38:02,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:38:02,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:38:02,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:38:02,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:38:02,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:38:02,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:38:02,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:38:02,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:38:02,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:38:02,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:38:02,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:38:02,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:38:02,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:38:02,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:38:02,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:38:02,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:38:02,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:38:02,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:38:02,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:38:02,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:38:02,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:38:02,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:38:02,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:38:02,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:38:02,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:38:02,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:38:02,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:38:02,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:38:02,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:38:02,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:38:02,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:38:02,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:38:02,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:38:02,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:38:02,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:38:02,532 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:38:02,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:38:02,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:38:02,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:38:02,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:38:02,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:38:02,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:38:02,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:38:02,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:38:02,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:38:02,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:38:02,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:38:02,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:38:02,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:38:02,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:38:02,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:38:02,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:38:02,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:38:02,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:38:02,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:38:02,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:38:02,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:38:02,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:38:02,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:38:02,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:38:02,848 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:38:02,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 02:38:02,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89412feb6/e6a40052451748059658a32e20e8e164/FLAGb6f50ea64 [2020-04-18 02:38:03,386 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:38:03,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 02:38:03,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89412feb6/e6a40052451748059658a32e20e8e164/FLAGb6f50ea64 [2020-04-18 02:38:03,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89412feb6/e6a40052451748059658a32e20e8e164 [2020-04-18 02:38:03,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:38:03,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:38:03,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:38:03,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:38:03,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:38:03,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:38:03" (1/1) ... [2020-04-18 02:38:03,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1006d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:03, skipping insertion in model container [2020-04-18 02:38:03,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:38:03" (1/1) ... [2020-04-18 02:38:03,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:38:03,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:38:04,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:38:04,334 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:38:04,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:38:04,469 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:38:04,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04 WrapperNode [2020-04-18 02:38:04,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:38:04,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:38:04,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:38:04,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:38:04,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:38:04,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:38:04,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:38:04,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:38:04,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (1/1) ... [2020-04-18 02:38:04,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:38:04,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:38:04,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:38:04,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:38:04,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (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 [2020-04-18 02:38:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:38:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:38:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:38:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:38:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:38:04,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:38:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:38:04,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:38:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:38:04,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:38:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:38:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:38:04,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:38:04,634 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:38:04,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:38:04,966 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:38:04,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:38:04 BoogieIcfgContainer [2020-04-18 02:38:04,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:38:04,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:38:04,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:38:04,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:38:04,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:38:03" (1/3) ... [2020-04-18 02:38:04,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd6232c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:38:04, skipping insertion in model container [2020-04-18 02:38:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:38:04" (2/3) ... [2020-04-18 02:38:04,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd6232c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:38:04, skipping insertion in model container [2020-04-18 02:38:04,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:38:04" (3/3) ... [2020-04-18 02:38:04,978 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-04-18 02:38:04,990 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:38:04,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:38:04,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:38:04,998 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:38:05,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,028 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,029 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,030 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,030 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,030 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,031 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,031 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,031 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,032 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,032 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,033 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,033 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,033 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,033 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,034 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,034 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,038 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,045 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,045 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,046 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,046 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,050 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,050 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,050 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,051 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:38:05,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:38:05,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:38:05,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:38:05,080 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:38:05,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:38:05,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:38:05,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:38:05,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:38:05,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:38:05,097 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:38:05,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:38:05,146 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:38:05,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:38:05,152 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:38:05,155 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:38:05,177 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:38:05,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:38:05,178 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:38:05,181 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:38:05,182 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:38:06,553 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 02:38:06,757 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:38:06,757 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:38:06,761 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:38:06,814 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:38:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:38:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:38:06,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:06,834 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:06,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:38:06,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:06,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388764812] [2020-04-18 02:38:06,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:07,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388764812] [2020-04-18 02:38:07,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:07,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:38:07,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967772965] [2020-04-18 02:38:07,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:38:07,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:38:07,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:38:07,181 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:38:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:07,236 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:38:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:38:07,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:38:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:07,269 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:38:07,269 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:38:07,272 INFO L678 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 [2020-04-18 02:38:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:38:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:38:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:38:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:38:07,359 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:38:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:07,361 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:38:07,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:38:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:38:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:38:07,366 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:07,366 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:07,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-04-18 02:38:07,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:07,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686145245] [2020-04-18 02:38:07,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:07,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686145245] [2020-04-18 02:38:07,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:07,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:38:07,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627100189] [2020-04-18 02:38:07,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:07,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:07,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:07,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:07,463 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:38:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:07,499 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:38:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:38:07,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:38:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:07,503 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:38:07,503 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:38:07,504 INFO L678 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 [2020-04-18 02:38:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:38:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:38:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:38:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:38:07,530 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:38:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:07,530 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:38:07,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:38:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:38:07,533 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:07,533 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:07,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:07,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-18 02:38:07,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:07,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994419069] [2020-04-18 02:38:07,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:07,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994419069] [2020-04-18 02:38:07,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:07,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:07,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986203017] [2020-04-18 02:38:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:07,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:07,614 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:38:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:07,654 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:38:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:38:07,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:38:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:07,660 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:38:07,660 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:38:07,660 INFO L678 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 [2020-04-18 02:38:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:38:07,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:38:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:38:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:38:07,681 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:38:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:07,681 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:38:07,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:38:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:38:07,683 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:07,683 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:07,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 02:38:07,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:07,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160949323] [2020-04-18 02:38:07,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:07,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160949323] [2020-04-18 02:38:07,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:07,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:38:07,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740558730] [2020-04-18 02:38:07,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:07,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:07,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:07,773 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 02:38:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:07,815 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 02:38:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:38:07,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:38:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:07,819 INFO L225 Difference]: With dead ends: 165 [2020-04-18 02:38:07,819 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 02:38:07,820 INFO L678 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 [2020-04-18 02:38:07,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 02:38:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 02:38:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 02:38:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 02:38:07,836 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 02:38:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:07,837 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 02:38:07,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 02:38:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:38:07,843 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:07,843 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:07,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:07,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 02:38:07,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:07,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528014041] [2020-04-18 02:38:07,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:07,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528014041] [2020-04-18 02:38:07,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:07,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:07,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387741693] [2020-04-18 02:38:07,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:38:07,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:38:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:38:07,919 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-04-18 02:38:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:07,969 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:38:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:38:07,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:38:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:07,970 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:38:07,970 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:38:07,971 INFO L678 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 [2020-04-18 02:38:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:38:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:38:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:38:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:38:07,976 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 02:38:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:07,976 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:38:07,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:38:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:38:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:38:07,977 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:07,977 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:07,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:07,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 02:38:07,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:07,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892013912] [2020-04-18 02:38:07,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:08,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892013912] [2020-04-18 02:38:08,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:08,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:38:08,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050041076] [2020-04-18 02:38:08,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:38:08,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:08,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:38:08,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:38:08,031 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-04-18 02:38:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:08,091 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 02:38:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:38:08,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:38:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:08,093 INFO L225 Difference]: With dead ends: 92 [2020-04-18 02:38:08,093 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 02:38:08,093 INFO L678 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 [2020-04-18 02:38:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 02:38:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 02:38:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 02:38:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 02:38:08,097 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 02:38:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:08,098 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 02:38:08,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:38:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 02:38:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:38:08,099 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:08,099 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:08,100 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:08,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 02:38:08,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:08,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720940447] [2020-04-18 02:38:08,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:08,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720940447] [2020-04-18 02:38:08,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:08,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:08,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073745275] [2020-04-18 02:38:08,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:08,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:08,154 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-04-18 02:38:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:08,174 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-04-18 02:38:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:38:08,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:38:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:08,176 INFO L225 Difference]: With dead ends: 97 [2020-04-18 02:38:08,176 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:38:08,176 INFO L678 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 [2020-04-18 02:38:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:38:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:38:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:38:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:38:08,178 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-04-18 02:38:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:08,179 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:38:08,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:38:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:38:08,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:08,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:08,193 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-18 02:38:08,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:08,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766742884] [2020-04-18 02:38:08,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:08,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766742884] [2020-04-18 02:38:08,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:08,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:08,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218017310] [2020-04-18 02:38:08,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:08,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:08,254 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:38:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:08,274 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:38:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:38:08,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:38:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:08,275 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:38:08,275 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:38:08,275 INFO L678 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 [2020-04-18 02:38:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:38:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:38:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:38:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:38:08,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:38:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:08,277 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:38:08,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:38:08,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:38:08,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:38:08 BasicIcfg [2020-04-18 02:38:08,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:38:08,290 INFO L168 Benchmark]: Toolchain (without parser) took 4527.55 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 101.2 MB in the beginning and 207.0 MB in the end (delta: -105.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:38:08,291 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:38:08,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.2 MB in the beginning and 158.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:08,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:08,298 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:08,299 INFO L168 Benchmark]: RCFGBuilder took 422.89 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 133.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:08,301 INFO L168 Benchmark]: TraceAbstraction took 3310.54 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 207.0 MB in the end (delta: -74.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:38:08,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.2 MB in the beginning and 158.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.89 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 133.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3310.54 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.4 MB in the beginning and 207.0 MB in the end (delta: -74.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 160 SDtfs, 154 SDslu, 222 SDs, 0 SdLazy, 117 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 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...