/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:09:19,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:09:19,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:09:19,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:09:19,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:09:19,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:09:19,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:09:19,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:09:19,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:09:19,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:09:19,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:09:19,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:09:19,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:09:19,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:09:19,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:09:19,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:09:19,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:09:19,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:09:19,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:09:19,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:09:19,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:09:19,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:09:19,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:09:19,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:09:19,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:09:19,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:09:19,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:09:19,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:09:19,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:09:19,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:09:19,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:09:19,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:09:19,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:09:19,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:09:19,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:09:19,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:09:19,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:09:19,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:09:19,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:09:19,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:09:19,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:09:19,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:09:19,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:09:19,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:09:19,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:09:19,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:09:19,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:09:19,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:09:19,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:09:19,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:09:19,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:09:19,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:09:19,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:09:19,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:09:19,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:09:19,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:09:19,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:09:19,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:09:19,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:09:19,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:09:19,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:09:19,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:09:19,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:09:19,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:19,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:09:19,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:09:19,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:09:19,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:09:19,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:09:19,711 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:09:19,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:09:20,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:09:20,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:09:20,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:09:20,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:09:20,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:09:20,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-10-21 23:09:20,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a19592ff/48b84cfefb1a444bad9d957b30638232/FLAGbfb1a2f1b [2020-10-21 23:09:20,730 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:09:20,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-10-21 23:09:20,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a19592ff/48b84cfefb1a444bad9d957b30638232/FLAGbfb1a2f1b [2020-10-21 23:09:21,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a19592ff/48b84cfefb1a444bad9d957b30638232 [2020-10-21 23:09:21,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:09:21,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:09:21,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:21,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:09:21,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:09:21,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f89b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21, skipping insertion in model container [2020-10-21 23:09:21,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:09:21,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:09:21,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:21,663 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:09:21,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:21,828 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:09:21,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21 WrapperNode [2020-10-21 23:09:21,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:21,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:21,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:09:21,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:09:21,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:21,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:09:21,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:09:21,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:09:21,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (1/1) ... [2020-10-21 23:09:21,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:09:21,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:09:21,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:09:21,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:09:21,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (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 [2020-10-21 23:09:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:09:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:09:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:09:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:09:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:09:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:09:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:09:21,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:09:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:09:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:09:21,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:09:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:09:21,973 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:09:22,282 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:09:22,282 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:09:22,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:22 BoogieIcfgContainer [2020-10-21 23:09:22,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:09:22,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:09:22,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:09:22,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:09:22,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:09:21" (1/3) ... [2020-10-21 23:09:22,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ebf21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:22, skipping insertion in model container [2020-10-21 23:09:22,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:21" (2/3) ... [2020-10-21 23:09:22,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ebf21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:22, skipping insertion in model container [2020-10-21 23:09:22,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:22" (3/3) ... [2020-10-21 23:09:22,297 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-10-21 23:09:22,312 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:09:22,312 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:09:22,324 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:09:22,326 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:09:22,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,366 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,366 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:22,376 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:09:22,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 23:09:22,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:09:22,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:09:22,421 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:09:22,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:09:22,422 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:09:22,422 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:09:22,422 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:09:22,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:09:22,449 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:09:22,450 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:22,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:22,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:22,513 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-21 23:09:22,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:09:22,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-21 23:09:22,522 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-21 23:09:23,461 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-21 23:09:24,006 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-21 23:09:24,120 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-21 23:09:24,120 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-21 23:09:24,127 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-21 23:09:24,144 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-21 23:09:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-21 23:09:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 23:09:24,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:24,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 23:09:24,154 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-21 23:09:24,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:24,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194933453] [2020-10-21 23:09:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:24,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194933453] [2020-10-21 23:09:24,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:24,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:09:24,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530610071] [2020-10-21 23:09:24,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 23:09:24,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 23:09:24,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 23:09:24,367 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-21 23:09:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:24,386 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-21 23:09:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 23:09:24,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-21 23:09:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:24,401 INFO L225 Difference]: With dead ends: 90 [2020-10-21 23:09:24,401 INFO L226 Difference]: Without dead ends: 74 [2020-10-21 23:09:24,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 23:09:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-21 23:09:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-21 23:09:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-21 23:09:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-21 23:09:24,453 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-21 23:09:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:24,454 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-21 23:09:24,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 23:09:24,454 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-21 23:09:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:09:24,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:24,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:24,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:09:24,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-21 23:09:24,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:24,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571303074] [2020-10-21 23:09:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:24,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571303074] [2020-10-21 23:09:24,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:24,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:24,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384433478] [2020-10-21 23:09:24,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:09:24,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:24,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:09:24,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:24,594 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-21 23:09:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:24,636 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-21 23:09:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:24,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:09:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:24,638 INFO L225 Difference]: With dead ends: 63 [2020-10-21 23:09:24,638 INFO L226 Difference]: Without dead ends: 47 [2020-10-21 23:09:24,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-21 23:09:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-21 23:09:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-21 23:09:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-21 23:09:24,647 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-21 23:09:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:24,647 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-21 23:09:24,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:09:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-21 23:09:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:09:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:24,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:24,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:09:24,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-21 23:09:24,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:24,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355734425] [2020-10-21 23:09:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:24,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355734425] [2020-10-21 23:09:24,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:24,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:24,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337914681] [2020-10-21 23:09:24,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:24,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:24,740 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-10-21 23:09:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:24,780 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-21 23:09:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:09:24,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-21 23:09:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:24,782 INFO L225 Difference]: With dead ends: 36 [2020-10-21 23:09:24,782 INFO L226 Difference]: Without dead ends: 29 [2020-10-21 23:09:24,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:09:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-21 23:09:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-21 23:09:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-21 23:09:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-21 23:09:24,787 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-21 23:09:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:24,787 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-21 23:09:24,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-21 23:09:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:09:24,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:24,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:24,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:09:24,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-21 23:09:24,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:24,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43264298] [2020-10-21 23:09:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:24,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43264298] [2020-10-21 23:09:24,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:24,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:24,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860368883] [2020-10-21 23:09:24,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:24,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:24,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:24,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:24,916 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-21 23:09:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:24,952 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-21 23:09:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:24,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:09:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:24,953 INFO L225 Difference]: With dead ends: 37 [2020-10-21 23:09:24,953 INFO L226 Difference]: Without dead ends: 17 [2020-10-21 23:09:24,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-21 23:09:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-21 23:09:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-21 23:09:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-21 23:09:24,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-21 23:09:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:24,957 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-21 23:09:24,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-21 23:09:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:09:24,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:24,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:24,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:09:24,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:24,958 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-21 23:09:24,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:24,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288695792] [2020-10-21 23:09:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:25,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288695792] [2020-10-21 23:09:25,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:25,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:25,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619298953] [2020-10-21 23:09:25,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:25,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:25,014 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-21 23:09:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:25,041 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-21 23:09:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:25,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:09:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:25,042 INFO L225 Difference]: With dead ends: 16 [2020-10-21 23:09:25,042 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:09:25,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:09:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:09:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:09:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:09:25,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-21 23:09:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:25,044 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:09:25,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:09:25,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:09:25,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:09:25,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:09:25 BasicIcfg [2020-10-21 23:09:25,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:09:25,051 INFO L168 Benchmark]: Toolchain (without parser) took 4023.67 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 99.5 MB in the beginning and 125.8 MB in the end (delta: -26.3 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,052 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.41 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 98.7 MB in the beginning and 156.5 MB in the end (delta: -57.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.35 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,055 INFO L168 Benchmark]: Boogie Preprocessor took 26.80 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 153.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,055 INFO L168 Benchmark]: RCFGBuilder took 384.55 ms. Allocated memory is still 201.3 MB. Free memory was 153.1 MB in the beginning and 131.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,056 INFO L168 Benchmark]: TraceAbstraction took 2761.19 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.0 MB in the beginning and 125.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:25,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 796.41 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 98.7 MB in the beginning and 156.5 MB in the end (delta: -57.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.35 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.80 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 153.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.55 ms. Allocated memory is still 201.3 MB. Free memory was 153.1 MB in the beginning and 131.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2761.19 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.0 MB in the beginning and 125.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 435 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 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...