/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/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:50:37,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:50:37,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:50:37,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:50:37,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:50:37,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:50:37,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:50:37,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:50:37,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:50:37,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:50:37,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:50:37,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:50:37,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:50:37,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:50:37,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:50:37,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:50:37,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:50:37,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:50:37,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:50:37,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:50:37,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:50:37,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:50:37,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:50:37,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:50:37,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:50:37,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:50:37,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:50:37,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:50:37,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:50:37,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:50:37,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:50:37,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:50:37,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:50:37,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:50:37,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:50:37,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:50:37,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:50:37,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:50:37,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:50:37,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:50:37,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:50:37,749 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 02:50:37,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:50:37,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:50:37,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:50:37,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:50:37,765 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:50:37,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:50:37,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:50:37,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:50:37,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:50:37,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:50:37,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:50:37,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:50:37,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:50:37,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:50:37,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:50:37,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:50:37,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:50:37,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:50:37,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:50:37,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:50:37,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:50:37,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:50:37,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:50:37,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:50:37,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:50:37,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:50:37,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:50:37,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:50:37,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:50:37,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:50:38,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:50:38,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:50:38,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:50:38,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:50:38,070 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:50:38,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 02:50:38,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdeb650/e16b370682434283a26e3b7e47375681/FLAGb4b36c597 [2020-04-18 02:50:38,714 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:50:38,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 02:50:38,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdeb650/e16b370682434283a26e3b7e47375681/FLAGb4b36c597 [2020-04-18 02:50:38,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdeb650/e16b370682434283a26e3b7e47375681 [2020-04-18 02:50:38,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:50:38,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:50:38,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:50:38,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:50:38,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:50:38,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:50:38" (1/1) ... [2020-04-18 02:50:38,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f03d719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:38, skipping insertion in model container [2020-04-18 02:50:38,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:50:38" (1/1) ... [2020-04-18 02:50:38,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:50:39,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:50:39,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:50:39,522 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:50:39,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:50:39,673 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:50:39,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39 WrapperNode [2020-04-18 02:50:39,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:50:39,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:50:39,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:50:39,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:50:39,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:50:39,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:50:39,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:50:39,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:50:39,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (1/1) ... [2020-04-18 02:50:39,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:50:39,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:50:39,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:50:39,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:50:39,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (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 02:50:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:50:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:50:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:50:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:50:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:50:39,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:50:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:50:39,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:50:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:50:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:50:39,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:50:39,804 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 02:50:40,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:50:40,134 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:50:40,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:50:40 BoogieIcfgContainer [2020-04-18 02:50:40,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:50:40,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:50:40,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:50:40,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:50:40,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:50:38" (1/3) ... [2020-04-18 02:50:40,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fa736f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:50:40, skipping insertion in model container [2020-04-18 02:50:40,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:50:39" (2/3) ... [2020-04-18 02:50:40,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fa736f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:50:40, skipping insertion in model container [2020-04-18 02:50:40,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:50:40" (3/3) ... [2020-04-18 02:50:40,146 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-04-18 02:50:40,155 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:50:40,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:50:40,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:50:40,162 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:50:40,185 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,186 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,186 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,186 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,187 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,187 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,187 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,188 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,188 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,188 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,188 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,188 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,192 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,192 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,192 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,193 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,204 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,204 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,205 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,206 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:50:40,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:50:40,242 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:50:40,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:50:40,242 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:50:40,242 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:50:40,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:50:40,243 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:50:40,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:50:40,243 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:50:40,257 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:40,259 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:40,298 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:50:40,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:50:40,303 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:50:40,305 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:50:40,327 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:50:40,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:50:40,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:50:40,330 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:50:40,334 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:50:41,542 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1209 [2020-04-18 02:50:41,542 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-18 02:50:41,546 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:50:41,560 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:50:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:50:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:50:41,569 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:41,570 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:50:41,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:41,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 1 times [2020-04-18 02:50:41,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:41,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12429688] [2020-04-18 02:50:41,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:41,827 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 02:50:41,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12429688] [2020-04-18 02:50:41,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:41,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:50:41,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070477166] [2020-04-18 02:50:41,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:50:41,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:41,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:50:41,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:50:41,852 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:50:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:41,883 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 02:50:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:50:41,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:50:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:41,896 INFO L225 Difference]: With dead ends: 72 [2020-04-18 02:50:41,897 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 02:50:41,898 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 02:50:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 02:50:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 02:50:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 02:50:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 02:50:41,946 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 02:50:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:41,947 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 02:50:41,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:50:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 02:50:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:50:41,948 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:41,949 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:41,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 1 times [2020-04-18 02:50:41,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:41,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9559660] [2020-04-18 02:50:41,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:42,104 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 02:50:42,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9559660] [2020-04-18 02:50:42,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:42,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:50:42,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571385969] [2020-04-18 02:50:42,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:50:42,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:42,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:50:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:50:42,108 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-04-18 02:50:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:42,146 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 02:50:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:50:42,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 02:50:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:42,148 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:50:42,148 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 02:50:42,149 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 02:50:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 02:50:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 02:50:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 02:50:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 02:50:42,154 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-04-18 02:50:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:42,155 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 02:50:42,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:50:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 02:50:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:50:42,156 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:42,156 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:42,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 1 times [2020-04-18 02:50:42,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:42,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145273054] [2020-04-18 02:50:42,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:42,224 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 02:50:42,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145273054] [2020-04-18 02:50:42,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:42,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:50:42,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018214650] [2020-04-18 02:50:42,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:50:42,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:50:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:50:42,228 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 02:50:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:42,267 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 02:50:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:50:42,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 02:50:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:42,268 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:50:42,268 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 02:50:42,269 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 02:50:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 02:50:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 02:50:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 02:50:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 02:50:42,272 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 02:50:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:42,273 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 02:50:42,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:50:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 02:50:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:50:42,274 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:42,274 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:42,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash 967414389, now seen corresponding path program 1 times [2020-04-18 02:50:42,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:42,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999682642] [2020-04-18 02:50:42,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:42,329 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 02:50:42,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999682642] [2020-04-18 02:50:42,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:42,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:50:42,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263136026] [2020-04-18 02:50:42,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:50:42,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:42,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:50:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:50:42,333 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 3 states. [2020-04-18 02:50:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:42,350 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-04-18 02:50:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:50:42,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:50:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:42,351 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:50:42,351 INFO L226 Difference]: Without dead ends: 16 [2020-04-18 02:50:42,352 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 [2020-04-18 02:50:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-04-18 02:50:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-04-18 02:50:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-04-18 02:50:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-04-18 02:50:42,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-04-18 02:50:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:42,357 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-04-18 02:50:42,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:50:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 02:50:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:50:42,358 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:50:42,358 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:50:42,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:50:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:50:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash -129480839, now seen corresponding path program 2 times [2020-04-18 02:50:42,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:50:42,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150707857] [2020-04-18 02:50:42,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:50:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:50:42,399 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 02:50:42,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150707857] [2020-04-18 02:50:42,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:50:42,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:50:42,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317453930] [2020-04-18 02:50:42,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:50:42,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:50:42,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:50:42,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:50:42,402 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-04-18 02:50:42,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:50:42,414 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 02:50:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:50:42,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:50:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:50:42,415 INFO L225 Difference]: With dead ends: 15 [2020-04-18 02:50:42,415 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:50:42,415 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 02:50:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:50:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:50:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:50:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:50:42,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:50:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:50:42,417 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:50:42,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:50:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:50:42,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:50:42,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:50:42 BasicIcfg [2020-04-18 02:50:42,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:50:42,423 INFO L168 Benchmark]: Toolchain (without parser) took 3484.95 ms. Allocated memory was 137.4 MB in the beginning and 251.7 MB in the end (delta: 114.3 MB). Free memory was 99.7 MB in the beginning and 185.7 MB in the end (delta: -86.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,424 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.37 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.7 MB in the beginning and 158.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,427 INFO L168 Benchmark]: Boogie Preprocessor took 25.19 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,428 INFO L168 Benchmark]: RCFGBuilder took 393.76 ms. Allocated memory is still 201.3 MB. Free memory was 154.7 MB in the beginning and 135.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:50:42,429 INFO L168 Benchmark]: TraceAbstraction took 2281.57 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 135.2 MB in the beginning and 185.7 MB in the end (delta: -50.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:50:42,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.37 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.7 MB in the beginning and 158.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.19 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.76 ms. Allocated memory is still 201.3 MB. Free memory was 154.7 MB in the beginning and 135.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2281.57 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 135.2 MB in the beginning and 185.7 MB in the end (delta: -50.5 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: 1.2s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 364 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1209 CheckedPairsTotal, 47 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, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 64 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 939 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...