/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/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:11:45,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:11:45,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:11:45,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:11:45,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:11:45,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:11:45,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:11:45,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:11:45,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:11:45,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:11:45,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:11:45,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:11:45,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:11:45,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:11:45,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:11:45,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:11:45,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:11:45,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:11:45,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:11:45,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:11:45,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:11:45,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:11:45,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:11:45,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:11:45,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:11:45,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:11:45,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:11:45,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:11:45,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:11:45,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:11:45,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:11:45,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:11:45,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:11:45,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:11:45,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:11:45,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:11:45,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:11:45,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:11:45,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:11:45,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:11:45,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:11:45,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:11:45,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:11:45,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:11:45,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:11:45,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:11:45,588 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:11:45,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:11:45,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:11:45,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:11:45,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:11:45,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:11:45,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:11:45,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:11:45,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:11:45,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:11:45,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:11:45,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:11:45,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:11:45,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:11:45,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:11:45,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:11:45,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:11:45,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:11:45,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:11:45,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:11:45,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:11:45,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:11:45,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:11:45,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:11:45,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:11:45,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:11:45,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:11:45,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:11:45,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:11:45,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:11:45,925 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:11:45,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-04-17 18:11:45,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf85e6f/a31d68da25db424ca3ec32adde981d6f/FLAG9b8a6c113 [2020-04-17 18:11:46,557 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:11:46,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-04-17 18:11:46,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf85e6f/a31d68da25db424ca3ec32adde981d6f/FLAG9b8a6c113 [2020-04-17 18:11:46,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf85e6f/a31d68da25db424ca3ec32adde981d6f [2020-04-17 18:11:46,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:11:46,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:11:46,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:11:46,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:11:46,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:11:46,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:11:46" (1/1) ... [2020-04-17 18:11:46,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fb72c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:46, skipping insertion in model container [2020-04-17 18:11:46,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:11:46" (1/1) ... [2020-04-17 18:11:46,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:11:46,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:11:47,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:11:47,386 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:11:47,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:11:47,597 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:11:47,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47 WrapperNode [2020-04-17 18:11:47,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:11:47,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:11:47,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:11:47,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:11:47,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:11:47,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:11:47,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:11:47,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:11:47,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (1/1) ... [2020-04-17 18:11:47,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:11:47,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:11:47,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:11:47,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:11:47,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (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 [2020-04-17 18:11:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:11:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:11:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:11:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:11:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:11:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:11:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:11:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:11:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:11:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:11:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:11:47,747 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:11:48,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:11:48,073 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:11:48,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:11:48 BoogieIcfgContainer [2020-04-17 18:11:48,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:11:48,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:11:48,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:11:48,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:11:48,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:11:46" (1/3) ... [2020-04-17 18:11:48,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fec5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:11:48, skipping insertion in model container [2020-04-17 18:11:48,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:11:47" (2/3) ... [2020-04-17 18:11:48,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fec5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:11:48, skipping insertion in model container [2020-04-17 18:11:48,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:11:48" (3/3) ... [2020-04-17 18:11:48,085 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2020-04-17 18:11:48,095 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:11:48,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:11:48,103 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:11:48,104 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:11:48,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,128 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,128 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,128 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,129 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,130 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,130 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,130 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,131 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,134 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,135 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,135 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,135 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,141 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,142 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,142 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,143 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:11:48,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 18:11:48,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:11:48,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:11:48,186 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:11:48,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:11:48,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:11:48,187 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:11:48,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:11:48,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:11:48,202 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-04-17 18:11:48,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-17 18:11:48,249 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-17 18:11:48,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:11:48,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 18:11:48,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-17 18:11:48,275 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-17 18:11:48,275 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:11:48,276 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 18:11:48,278 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 18:11:48,279 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:11:49,793 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-04-17 18:11:49,794 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-04-17 18:11:49,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 18:11:49,810 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 18:11:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 18:11:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 18:11:49,820 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:49,821 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 18:11:49,822 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-04-17 18:11:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:49,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645666975] [2020-04-17 18:11:49,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645666975] [2020-04-17 18:11:50,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:11:50,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479295128] [2020-04-17 18:11:50,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:11:50,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:11:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:11:50,065 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-17 18:11:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,115 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-17 18:11:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:11:50,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 18:11:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,148 INFO L225 Difference]: With dead ends: 72 [2020-04-17 18:11:50,149 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 18:11:50,152 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 [2020-04-17 18:11:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 18:11:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-17 18:11:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-17 18:11:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-17 18:11:50,227 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-17 18:11:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,227 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-17 18:11:50,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:11:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-17 18:11:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 18:11:50,229 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:50,230 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:11:50,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash 359297998, now seen corresponding path program 1 times [2020-04-17 18:11:50,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:50,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900663203] [2020-04-17 18:11:50,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900663203] [2020-04-17 18:11:50,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:11:50,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296216343] [2020-04-17 18:11:50,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:11:50,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:11:50,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:11:50,349 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-17 18:11:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,362 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-04-17 18:11:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:11:50,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 18:11:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,366 INFO L225 Difference]: With dead ends: 55 [2020-04-17 18:11:50,368 INFO L226 Difference]: Without dead ends: 55 [2020-04-17 18:11:50,369 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 [2020-04-17 18:11:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-17 18:11:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-17 18:11:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-17 18:11:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-04-17 18:11:50,382 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-04-17 18:11:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,383 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-04-17 18:11:50,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:11:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-04-17 18:11:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:11:50,384 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:50,384 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:11:50,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-04-17 18:11:50,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:50,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215135219] [2020-04-17 18:11:50,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215135219] [2020-04-17 18:11:50,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:11:50,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994563926] [2020-04-17 18:11:50,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:11:50,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:11:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:11:50,556 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-04-17 18:11:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,592 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-17 18:11:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:11:50,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-17 18:11:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,595 INFO L225 Difference]: With dead ends: 56 [2020-04-17 18:11:50,595 INFO L226 Difference]: Without dead ends: 40 [2020-04-17 18:11:50,596 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 [2020-04-17 18:11:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-17 18:11:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-17 18:11:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-17 18:11:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-17 18:11:50,601 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-04-17 18:11:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,602 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-17 18:11:50,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:11:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-17 18:11:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:11:50,603 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:50,603 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:11:50,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:50,604 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-04-17 18:11:50,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:50,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167493761] [2020-04-17 18:11:50,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167493761] [2020-04-17 18:11:50,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:11:50,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429238851] [2020-04-17 18:11:50,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:11:50,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:11:50,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:11:50,641 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-04-17 18:11:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,650 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-04-17 18:11:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:11:50,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:11:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,652 INFO L225 Difference]: With dead ends: 51 [2020-04-17 18:11:50,652 INFO L226 Difference]: Without dead ends: 41 [2020-04-17 18:11:50,652 INFO L678 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 [2020-04-17 18:11:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-04-17 18:11:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-04-17 18:11:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-04-17 18:11:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-04-17 18:11:50,657 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-04-17 18:11:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,658 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-04-17 18:11:50,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:11:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-04-17 18:11:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:11:50,659 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:50,659 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:11:50,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-04-17 18:11:50,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:50,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023749704] [2020-04-17 18:11:50,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023749704] [2020-04-17 18:11:50,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:11:50,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312735481] [2020-04-17 18:11:50,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:11:50,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:11:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:11:50,691 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-04-17 18:11:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,703 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-04-17 18:11:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:11:50,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:11:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,706 INFO L225 Difference]: With dead ends: 42 [2020-04-17 18:11:50,707 INFO L226 Difference]: Without dead ends: 31 [2020-04-17 18:11:50,708 INFO L678 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 [2020-04-17 18:11:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-17 18:11:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-04-17 18:11:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 18:11:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-04-17 18:11:50,713 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-04-17 18:11:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,713 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-04-17 18:11:50,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:11:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-04-17 18:11:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:11:50,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:11:50,714 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:11:50,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:11:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:11:50,715 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-04-17 18:11:50,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:11:50,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650201988] [2020-04-17 18:11:50,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:11:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:11:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:11:50,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650201988] [2020-04-17 18:11:50,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:11:50,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:11:50,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511512218] [2020-04-17 18:11:50,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:11:50,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:11:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:11:50,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:11:50,792 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-04-17 18:11:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:11:50,823 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-17 18:11:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:11:50,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 18:11:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:11:50,825 INFO L225 Difference]: With dead ends: 25 [2020-04-17 18:11:50,826 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:11:50,826 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 [2020-04-17 18:11:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:11:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:11:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:11:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:11:50,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-04-17 18:11:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:11:50,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:11:50,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:11:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:11:50,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:11:50,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:11:50 BasicIcfg [2020-04-17 18:11:50,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:11:50,841 INFO L168 Benchmark]: Toolchain (without parser) took 3972.85 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 101.2 MB in the beginning and 194.7 MB in the end (delta: -93.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,841 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.07 ms. Allocated memory was 137.9 MB in the beginning and 227.5 MB in the end (delta: 89.7 MB). Free memory was 99.2 MB in the beginning and 193.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.98 ms. Allocated memory is still 227.5 MB. Free memory was 193.8 MB in the beginning and 191.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,848 INFO L168 Benchmark]: Boogie Preprocessor took 24.87 ms. Allocated memory is still 227.5 MB. Free memory was 191.0 MB in the beginning and 190.1 MB in the end (delta: 907.3 kB). Peak memory consumption was 907.3 kB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,850 INFO L168 Benchmark]: RCFGBuilder took 397.46 ms. Allocated memory is still 227.5 MB. Free memory was 190.1 MB in the beginning and 169.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:11:50,851 INFO L168 Benchmark]: TraceAbstraction took 2757.32 ms. Allocated memory was 227.5 MB in the beginning and 250.6 MB in the end (delta: 23.1 MB). Free memory was 169.0 MB in the beginning and 194.7 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:11:50,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.07 ms. Allocated memory was 137.9 MB in the beginning and 227.5 MB in the end (delta: 89.7 MB). Free memory was 99.2 MB in the beginning and 193.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.98 ms. Allocated memory is still 227.5 MB. Free memory was 193.8 MB in the beginning and 191.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.87 ms. Allocated memory is still 227.5 MB. Free memory was 191.0 MB in the beginning and 190.1 MB in the end (delta: 907.3 kB). Peak memory consumption was 907.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 397.46 ms. Allocated memory is still 227.5 MB. Free memory was 190.1 MB in the beginning and 169.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2757.32 ms. Allocated memory was 227.5 MB in the beginning and 250.6 MB in the end (delta: 23.1 MB). Free memory was 169.0 MB in the beginning and 194.7 MB in the end (delta: -25.7 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: 1.5s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 382 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 833 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...