/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:41:01,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:41:01,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:41:01,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:41:01,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:41:01,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:41:01,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:41:01,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:41:01,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:41:01,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:41:01,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:41:01,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:41:01,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:41:01,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:41:01,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:41:01,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:41:01,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:41:01,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:41:01,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:41:01,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:41:01,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:41:01,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:41:01,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:41:01,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:41:01,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:41:01,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:41:01,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:41:01,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:41:01,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:41:01,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:41:01,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:41:01,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:41:01,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:41:01,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:41:01,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:41:01,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:41:01,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:41:01,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:41:01,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:41:01,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:41:01,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:41:01,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:41:01,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:41:01,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:41:01,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:41:01,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:41:01,835 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:41:01,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:41:01,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:41:01,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:41:01,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:41:01,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:41:01,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:41:01,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:41:01,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:41:01,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:41:01,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:41:01,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:41:01,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:41:01,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:41:01,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:41:01,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:41:01,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:41:01,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:41:01,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:41:01,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:41:01,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:41:01,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:41:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:41:01,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:41:01,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:41:01,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:41:02,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:41:02,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:41:02,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:41:02,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:41:02,157 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:41:02,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-04-17 17:41:02,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11b04d8e/0f913d32df23479aa7e1a10f4eb4cfca/FLAG233ebf4e7 [2020-04-17 17:41:02,771 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:41:02,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-04-17 17:41:02,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11b04d8e/0f913d32df23479aa7e1a10f4eb4cfca/FLAG233ebf4e7 [2020-04-17 17:41:03,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11b04d8e/0f913d32df23479aa7e1a10f4eb4cfca [2020-04-17 17:41:03,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:41:03,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:41:03,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:41:03,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:41:03,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:41:03,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:03,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb2786e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03, skipping insertion in model container [2020-04-17 17:41:03,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:03,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:41:03,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:41:03,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:41:03,774 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:41:03,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:41:03,932 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:41:03,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03 WrapperNode [2020-04-17 17:41:03,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:41:03,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:41:03,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:41:03,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:41:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:03,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:41:04,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:41:04,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:41:04,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:41:04,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... [2020-04-17 17:41:04,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:41:04,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:41:04,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:41:04,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:41:04,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:41:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:41:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:41:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:41:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:41:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:41:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:41:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:41:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:41:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:41:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:41:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:41:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:41:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:41:04,152 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:41:04,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:41:04,586 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:41:04,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:41:04 BoogieIcfgContainer [2020-04-17 17:41:04,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:41:04,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:41:04,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:41:04,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:41:04,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:41:03" (1/3) ... [2020-04-17 17:41:04,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab8f248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:41:04, skipping insertion in model container [2020-04-17 17:41:04,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:41:03" (2/3) ... [2020-04-17 17:41:04,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab8f248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:41:04, skipping insertion in model container [2020-04-17 17:41:04,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:41:04" (3/3) ... [2020-04-17 17:41:04,600 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-04-17 17:41:04,611 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:41:04,611 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:41:04,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:41:04,619 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:41:04,654 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,655 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,655 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,655 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,656 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,656 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,657 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,658 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,659 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,659 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,660 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,661 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,661 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,662 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,662 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,669 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,670 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,670 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,670 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,679 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,680 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,682 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,683 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,683 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,683 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:41:04,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:41:04,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:41:04,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:41:04,723 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:41:04,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:41:04,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:41:04,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:41:04,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:41:04,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:41:04,740 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 17:41:04,742 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:41:04,786 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:41:04,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:41:04,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:41:04,794 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:41:04,815 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:41:04,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:41:04,816 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:41:04,817 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:41:04,819 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:41:06,423 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 17:41:06,474 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-17 17:41:06,474 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 17:41:06,478 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 17:41:06,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 17:41:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 17:41:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:41:06,516 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:06,517 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:06,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-17 17:41:06,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:06,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483925897] [2020-04-17 17:41:06,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:06,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483925897] [2020-04-17 17:41:06,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:06,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:06,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813345923] [2020-04-17 17:41:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:41:06,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:06,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:41:06,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:41:06,724 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 17:41:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:06,756 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 17:41:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:41:06,758 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 17:41:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:06,775 INFO L225 Difference]: With dead ends: 362 [2020-04-17 17:41:06,775 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 17:41:06,777 INFO L678 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 [2020-04-17 17:41:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 17:41:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 17:41:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 17:41:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 17:41:06,852 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 17:41:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:06,853 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 17:41:06,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:41:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 17:41:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:41:06,855 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:06,856 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:06,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:06,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-17 17:41:06,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:06,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289255835] [2020-04-17 17:41:06,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289255835] [2020-04-17 17:41:07,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:07,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807752797] [2020-04-17 17:41:07,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:41:07,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:41:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:07,083 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-17 17:41:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,179 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 17:41:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:41:07,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-17 17:41:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,183 INFO L225 Difference]: With dead ends: 330 [2020-04-17 17:41:07,183 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 17:41:07,184 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:41:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 17:41:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 17:41:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 17:41:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 17:41:07,209 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 17:41:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,209 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 17:41:07,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:41:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 17:41:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:41:07,211 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,211 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,212 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-04-17 17:41:07,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462157611] [2020-04-17 17:41:07,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462157611] [2020-04-17 17:41:07,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:41:07,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178059440] [2020-04-17 17:41:07,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:07,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:07,282 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-17 17:41:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,307 INFO L93 Difference]: Finished difference Result 306 states and 830 transitions. [2020-04-17 17:41:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:41:07,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 17:41:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,310 INFO L225 Difference]: With dead ends: 306 [2020-04-17 17:41:07,311 INFO L226 Difference]: Without dead ends: 258 [2020-04-17 17:41:07,311 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-04-17 17:41:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-04-17 17:41:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-04-17 17:41:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 722 transitions. [2020-04-17 17:41:07,340 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 722 transitions. Word has length 10 [2020-04-17 17:41:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,340 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 722 transitions. [2020-04-17 17:41:07,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 722 transitions. [2020-04-17 17:41:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:41:07,347 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,347 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash 554610774, now seen corresponding path program 1 times [2020-04-17 17:41:07,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827328060] [2020-04-17 17:41:07,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827328060] [2020-04-17 17:41:07,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:07,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156817484] [2020-04-17 17:41:07,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:07,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:07,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:07,453 INFO L87 Difference]: Start difference. First operand 258 states and 722 transitions. Second operand 4 states. [2020-04-17 17:41:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,484 INFO L93 Difference]: Finished difference Result 394 states and 1044 transitions. [2020-04-17 17:41:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:41:07,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:41:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,487 INFO L225 Difference]: With dead ends: 394 [2020-04-17 17:41:07,487 INFO L226 Difference]: Without dead ends: 290 [2020-04-17 17:41:07,487 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 [2020-04-17 17:41:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-04-17 17:41:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 242. [2020-04-17 17:41:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-17 17:41:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 646 transitions. [2020-04-17 17:41:07,500 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 646 transitions. Word has length 11 [2020-04-17 17:41:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,500 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 646 transitions. [2020-04-17 17:41:07,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 646 transitions. [2020-04-17 17:41:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:41:07,502 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,502 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,503 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,503 INFO L82 PathProgramCache]: Analyzing trace with hash 556209878, now seen corresponding path program 1 times [2020-04-17 17:41:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840793457] [2020-04-17 17:41:07,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840793457] [2020-04-17 17:41:07,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:07,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616614244] [2020-04-17 17:41:07,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:41:07,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:41:07,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:07,568 INFO L87 Difference]: Start difference. First operand 242 states and 646 transitions. Second operand 5 states. [2020-04-17 17:41:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,624 INFO L93 Difference]: Finished difference Result 290 states and 741 transitions. [2020-04-17 17:41:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:41:07,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 17:41:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,626 INFO L225 Difference]: With dead ends: 290 [2020-04-17 17:41:07,626 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 17:41:07,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:41:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 17:41:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 17:41:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 17:41:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-04-17 17:41:07,633 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 11 [2020-04-17 17:41:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,634 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-04-17 17:41:07,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:41:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-04-17 17:41:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:41:07,635 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,635 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash 594574515, now seen corresponding path program 1 times [2020-04-17 17:41:07,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54349746] [2020-04-17 17:41:07,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54349746] [2020-04-17 17:41:07,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:07,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864401599] [2020-04-17 17:41:07,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:41:07,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:41:07,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:07,692 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 5 states. [2020-04-17 17:41:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,736 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2020-04-17 17:41:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:41:07,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:41:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,738 INFO L225 Difference]: With dead ends: 196 [2020-04-17 17:41:07,738 INFO L226 Difference]: Without dead ends: 82 [2020-04-17 17:41:07,739 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:41:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-17 17:41:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-17 17:41:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-17 17:41:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-04-17 17:41:07,742 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2020-04-17 17:41:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,743 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-04-17 17:41:07,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:41:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-04-17 17:41:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:41:07,744 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,744 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,744 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-04-17 17:41:07,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750187640] [2020-04-17 17:41:07,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750187640] [2020-04-17 17:41:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:41:07,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469780078] [2020-04-17 17:41:07,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:41:07,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:41:07,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:41:07,814 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2020-04-17 17:41:07,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,840 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-04-17 17:41:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:41:07,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:41:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,842 INFO L225 Difference]: With dead ends: 84 [2020-04-17 17:41:07,842 INFO L226 Difference]: Without dead ends: 70 [2020-04-17 17:41:07,842 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 [2020-04-17 17:41:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-17 17:41:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-04-17 17:41:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-04-17 17:41:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-04-17 17:41:07,846 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-04-17 17:41:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,846 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-04-17 17:41:07,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:41:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-04-17 17:41:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:41:07,847 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,847 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-04-17 17:41:07,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572796623] [2020-04-17 17:41:07,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572796623] [2020-04-17 17:41:07,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:41:07,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916532025] [2020-04-17 17:41:07,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:41:07,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:41:07,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:41:07,901 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2020-04-17 17:41:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:07,933 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-17 17:41:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:41:07,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:41:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:07,934 INFO L225 Difference]: With dead ends: 60 [2020-04-17 17:41:07,934 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 17:41:07,935 INFO L678 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 [2020-04-17 17:41:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 17:41:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 17:41:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 17:41:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-04-17 17:41:07,937 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-04-17 17:41:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:07,937 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-04-17 17:41:07,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:41:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-04-17 17:41:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:41:07,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:41:07,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:41:07,938 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:41:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:41:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-04-17 17:41:07,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:41:07,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059239789] [2020-04-17 17:41:07,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:41:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:41:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:41:07,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059239789] [2020-04-17 17:41:07,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:41:07,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 17:41:07,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183944146] [2020-04-17 17:41:07,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:41:07,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:41:07,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:41:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:41:07,999 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-04-17 17:41:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:41:08,022 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-04-17 17:41:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:41:08,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 17:41:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:41:08,023 INFO L225 Difference]: With dead ends: 46 [2020-04-17 17:41:08,023 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:41:08,024 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:41:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:41:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:41:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:41:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:41:08,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 17:41:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:41:08,026 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:41:08,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:41:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:41:08,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:41:08,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:41:08 BasicIcfg [2020-04-17 17:41:08,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:41:08,033 INFO L168 Benchmark]: Toolchain (without parser) took 4963.34 ms. Allocated memory was 144.7 MB in the beginning and 250.6 MB in the end (delta: 105.9 MB). Free memory was 101.2 MB in the beginning and 181.6 MB in the end (delta: -80.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:08,034 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 17:41:08,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.13 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.1 MB in the beginning and 159.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:08,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.22 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:08,042 INFO L168 Benchmark]: Boogie Preprocessor took 53.31 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:08,043 INFO L168 Benchmark]: RCFGBuilder took 520.51 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 133.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 17:41:08,044 INFO L168 Benchmark]: TraceAbstraction took 3439.13 ms. Allocated memory was 202.9 MB in the beginning and 250.6 MB in the end (delta: 47.7 MB). Free memory was 133.2 MB in the beginning and 181.6 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 17:41:08,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 840.13 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.1 MB in the beginning and 159.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 83.22 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.31 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.51 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 133.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3439.13 ms. Allocated memory was 202.9 MB in the beginning and 250.6 MB in the end (delta: 47.7 MB). Free memory was 133.2 MB in the beginning and 181.6 MB in the end (delta: -48.4 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: 1.7s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 660 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 193 SDtfs, 193 SDslu, 292 SDs, 0 SdLazy, 112 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...