/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:05:53,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:05:53,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:05:54,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:05:54,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:05:54,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:05:54,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:05:54,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:05:54,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:05:54,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:05:54,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:05:54,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:05:54,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:05:54,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:05:54,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:05:54,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:05:54,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:05:54,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:05:54,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:05:54,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:05:54,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:05:54,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:05:54,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:05:54,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:05:54,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:05:54,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:05:54,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:05:54,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:05:54,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:05:54,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:05:54,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:05:54,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:05:54,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:05:54,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:05:54,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:05:54,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:05:54,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:05:54,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:05:54,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:05:54,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:05:54,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:05:54,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 20:05:54,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:05:54,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:05:54,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:05:54,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:05:54,053 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:05:54,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:05:54,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:05:54,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:05:54,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:05:54,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:05:54,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:05:54,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:05:54,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:05:54,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:05:54,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:05:54,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:05:54,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:05:54,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:05:54,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:05:54,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:05:54,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:05:54,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:05:54,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:05:54,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:05:54,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:05:54,057 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:05:54,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:05:54,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:05:54,058 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:05:54,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:05:54,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:05:54,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:05:54,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:05:54,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:05:54,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:05:54,344 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:05:54,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2020-04-18 20:05:54,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669d223d3/9b63c0540f8344e0b54360eb825fa317/FLAGe1fa3c373 [2020-04-18 20:05:54,920 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:05:54,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2020-04-18 20:05:54,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669d223d3/9b63c0540f8344e0b54360eb825fa317/FLAGe1fa3c373 [2020-04-18 20:05:55,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669d223d3/9b63c0540f8344e0b54360eb825fa317 [2020-04-18 20:05:55,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:05:55,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:05:55,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:55,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:05:55,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:05:55,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:55" (1/1) ... [2020-04-18 20:05:55,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:55, skipping insertion in model container [2020-04-18 20:05:55,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:55" (1/1) ... [2020-04-18 20:05:55,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:05:55,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:05:55,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:55,875 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:05:55,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:56,016 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:05:56,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56 WrapperNode [2020-04-18 20:05:56,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:56,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:56,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:05:56,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:05:56,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:56,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:05:56,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:05:56,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:05:56,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... [2020-04-18 20:05:56,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:05:56,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:05:56,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:05:56,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:05:56,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:05:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:05:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:05:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:05:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:05:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:05:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:05:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:05:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:05:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:05:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:05:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:05:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:05:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:05:56,219 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 20:05:56,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:05:56,590 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:05:56,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:56 BoogieIcfgContainer [2020-04-18 20:05:56,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:05:56,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:05:56,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:05:56,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:05:56,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:05:55" (1/3) ... [2020-04-18 20:05:56,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361343ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:56, skipping insertion in model container [2020-04-18 20:05:56,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:56" (2/3) ... [2020-04-18 20:05:56,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361343ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:56, skipping insertion in model container [2020-04-18 20:05:56,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:56" (3/3) ... [2020-04-18 20:05:56,602 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2020-04-18 20:05:56,612 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:05:56,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:05:56,619 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:05:56,620 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:05:56,644 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,644 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,644 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,645 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,645 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,646 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,647 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,647 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,647 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,648 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,648 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,648 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,649 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,649 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,649 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,650 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,654 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,654 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,654 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,654 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,660 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,660 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,661 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,663 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,664 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:56,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:05:56,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:05:56,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:05:56,700 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:05:56,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:05:56,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:05:56,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:05:56,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:05:56,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:05:56,714 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 20:05:57,176 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8473 states. [2020-04-18 20:05:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states. [2020-04-18 20:05:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:05:57,220 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:57,221 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:57,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 1 times [2020-04-18 20:05:57,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:57,237 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2069064981] [2020-04-18 20:05:57,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:57,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 20:05:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 20:05:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:05:57,278 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:57,278 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 2 times [2020-04-18 20:05:57,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:57,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948811596] [2020-04-18 20:05:57,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:57,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948811596] [2020-04-18 20:05:57,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:57,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:57,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:57,675 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:57,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 20:05:57,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:57,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:57,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:57,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:57,746 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-04-18 20:05:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:57,823 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-04-18 20:05:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-04-18 20:05:57,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:57,825 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2069064981] [2020-04-18 20:05:57,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:57,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:57,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2069064981] [2020-04-18 20:05:57,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:57,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:57,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:57,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:57,833 INFO L87 Difference]: Start difference. First operand 8473 states. Second operand 6 states. [2020-04-18 20:05:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:58,128 INFO L93 Difference]: Finished difference Result 8780 states and 29872 transitions. [2020-04-18 20:05:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:05:58,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 20:05:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:58,191 INFO L225 Difference]: With dead ends: 8780 [2020-04-18 20:05:58,191 INFO L226 Difference]: Without dead ends: 3996 [2020-04-18 20:05:58,198 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2020-04-18 20:05:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3996. [2020-04-18 20:05:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-04-18 20:05:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 13367 transitions. [2020-04-18 20:05:58,472 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 13367 transitions. Word has length 37 [2020-04-18 20:05:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:58,474 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 13367 transitions. [2020-04-18 20:05:58,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 13367 transitions. [2020-04-18 20:05:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:58,490 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:58,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:58,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash 996075595, now seen corresponding path program 1 times [2020-04-18 20:05:58,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:58,499 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1859506469] [2020-04-18 20:05:58,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:58,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 201 transitions. [2020-04-18 20:05:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-04-18 20:05:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:58,507 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash 996075595, now seen corresponding path program 2 times [2020-04-18 20:05:58,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:58,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489574368] [2020-04-18 20:05:58,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:58,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489574368] [2020-04-18 20:05:58,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:58,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:58,753 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:58,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:58,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 113 transitions. [2020-04-18 20:05:58,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:58,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 20:05:58,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:05:58,818 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 7 states. [2020-04-18 20:05:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:59,009 INFO L93 Difference]: Finished difference Result 122 states and 201 transitions. [2020-04-18 20:05:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-04-18 20:05:59,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:59,011 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1859506469] [2020-04-18 20:05:59,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:59,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:59,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1859506469] [2020-04-18 20:05:59,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:05:59,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:59,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:59,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:05:59,014 INFO L87 Difference]: Start difference. First operand 3996 states and 13367 transitions. Second operand 7 states. [2020-04-18 20:05:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:59,188 INFO L93 Difference]: Finished difference Result 3528 states and 11300 transitions. [2020-04-18 20:05:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:05:59,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 20:05:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:59,206 INFO L225 Difference]: With dead ends: 3528 [2020-04-18 20:05:59,206 INFO L226 Difference]: Without dead ends: 2412 [2020-04-18 20:05:59,217 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:05:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-04-18 20:05:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2020-04-18 20:05:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2020-04-18 20:05:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 7559 transitions. [2020-04-18 20:05:59,302 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 7559 transitions. Word has length 41 [2020-04-18 20:05:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:59,303 INFO L479 AbstractCegarLoop]: Abstraction has 2412 states and 7559 transitions. [2020-04-18 20:05:59,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:05:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 7559 transitions. [2020-04-18 20:05:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:05:59,310 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:59,311 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:59,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash 799576525, now seen corresponding path program 1 times [2020-04-18 20:05:59,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:59,314 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1834160947] [2020-04-18 20:05:59,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:59,325 INFO L259 McrAutomatonBuilder]: Finished intersection with 462 states and 1133 transitions. [2020-04-18 20:05:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-04-18 20:05:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:05:59,333 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash 799576525, now seen corresponding path program 2 times [2020-04-18 20:05:59,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:59,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332006319] [2020-04-18 20:05:59,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:59,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332006319] [2020-04-18 20:05:59,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:59,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:05:59,512 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:59,517 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:59,534 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 259 transitions. [2020-04-18 20:05:59,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:59,578 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 20:05:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:59,579 INFO L87 Difference]: Start difference. First operand 462 states. Second operand 8 states. [2020-04-18 20:05:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:59,871 INFO L93 Difference]: Finished difference Result 462 states and 1133 transitions. [2020-04-18 20:05:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1133 transitions. [2020-04-18 20:05:59,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:59,873 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1834160947] [2020-04-18 20:05:59,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:59,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:05:59,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1834160947] [2020-04-18 20:05:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 20:05:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:59,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:05:59,875 INFO L87 Difference]: Start difference. First operand 2412 states and 7559 transitions. Second operand 8 states. [2020-04-18 20:06:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:00,004 INFO L93 Difference]: Finished difference Result 1764 states and 5336 transitions. [2020-04-18 20:06:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 20:06:00,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-04-18 20:06:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:00,013 INFO L225 Difference]: With dead ends: 1764 [2020-04-18 20:06:00,013 INFO L226 Difference]: Without dead ends: 1224 [2020-04-18 20:06:00,014 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:06:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-04-18 20:06:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2020-04-18 20:06:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-04-18 20:06:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 3599 transitions. [2020-04-18 20:06:00,056 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 3599 transitions. Word has length 45 [2020-04-18 20:06:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:00,058 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 3599 transitions. [2020-04-18 20:06:00,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 20:06:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 3599 transitions. [2020-04-18 20:06:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:00,064 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:00,065 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:00,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1836077105, now seen corresponding path program 1 times [2020-04-18 20:06:00,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:00,071 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1412446844] [2020-04-18 20:06:00,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:00,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 1762 states and 5713 transitions. [2020-04-18 20:06:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states. [2020-04-18 20:06:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:00,153 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:00,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1836077105, now seen corresponding path program 2 times [2020-04-18 20:06:00,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:00,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398406333] [2020-04-18 20:06:00,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:00,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398406333] [2020-04-18 20:06:00,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:00,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:00,335 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:00,341 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:00,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 182 states and 373 transitions. [2020-04-18 20:06:00,377 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:00,447 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 20:06:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:00,448 INFO L87 Difference]: Start difference. First operand 1762 states. Second operand 7 states. [2020-04-18 20:06:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:00,654 INFO L93 Difference]: Finished difference Result 2428 states and 7616 transitions. [2020-04-18 20:06:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 7616 transitions. [2020-04-18 20:06:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:00,663 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:06:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:00,664 INFO L82 PathProgramCache]: Analyzing trace with hash -447061139, now seen corresponding path program 3 times [2020-04-18 20:06:00,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:00,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14155577] [2020-04-18 20:06:00,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:00,868 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-04-18 20:06:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:00,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14155577] [2020-04-18 20:06:00,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:00,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:06:00,950 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:00,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:00,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 208 states and 423 transitions. [2020-04-18 20:06:00,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:01,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:06:01,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:06:01,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-04-18 20:06:01,098 INFO L87 Difference]: Start difference. First operand 2428 states and 7616 transitions. Second operand 8 states. [2020-04-18 20:06:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:01,493 INFO L93 Difference]: Finished difference Result 2448 states and 7634 transitions. [2020-04-18 20:06:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 7634 transitions. [2020-04-18 20:06:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:01,501 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:06:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash 350007119, now seen corresponding path program 4 times [2020-04-18 20:06:01,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:01,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747771518] [2020-04-18 20:06:01,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:01,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747771518] [2020-04-18 20:06:01,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:01,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:01,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:01,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:01,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 226 states and 489 transitions. [2020-04-18 20:06:01,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:01,666 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:06:01,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:06:01,667 INFO L87 Difference]: Start difference. First operand 2448 states and 7634 transitions. Second operand 7 states. [2020-04-18 20:06:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:01,828 INFO L93 Difference]: Finished difference Result 2914 states and 8887 transitions. [2020-04-18 20:06:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 8887 transitions. [2020-04-18 20:06:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:01,836 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:06:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:01,836 INFO L82 PathProgramCache]: Analyzing trace with hash -242681937, now seen corresponding path program 5 times [2020-04-18 20:06:01,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:01,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025104526] [2020-04-18 20:06:01,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:01,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025104526] [2020-04-18 20:06:01,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:01,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:01,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:01,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:01,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 301 transitions. [2020-04-18 20:06:01,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:01,991 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 20:06:01,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 20:06:01,992 INFO L87 Difference]: Start difference. First operand 2914 states and 8887 transitions. Second operand 7 states. [2020-04-18 20:06:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:02,235 INFO L93 Difference]: Finished difference Result 4108 states and 12060 transitions. [2020-04-18 20:06:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 12060 transitions. [2020-04-18 20:06:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:02,243 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 20:06:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:02,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1080284497, now seen corresponding path program 6 times [2020-04-18 20:06:02,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:02,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716316295] [2020-04-18 20:06:02,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:02,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716316295] [2020-04-18 20:06:02,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:02,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:02,321 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:02,326 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:02,355 INFO L259 McrAutomatonBuilder]: Finished intersection with 176 states and 375 transitions. [2020-04-18 20:06:02,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:02,416 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 20:06:02,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1704, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 20:06:02,418 INFO L87 Difference]: Start difference. First operand 4108 states and 12060 transitions. Second operand 7 states. [2020-04-18 20:06:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:02,547 INFO L93 Difference]: Finished difference Result 5724 states and 16214 transitions. [2020-04-18 20:06:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 16214 transitions. [2020-04-18 20:06:02,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:02,559 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1412446844] [2020-04-18 20:06:02,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:02,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:02,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1412446844] [2020-04-18 20:06:02,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 20:06:02,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 20:06:02,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2044, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 20:06:02,562 INFO L87 Difference]: Start difference. First operand 1224 states and 3599 transitions. Second operand 17 states. [2020-04-18 20:06:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:04,784 INFO L93 Difference]: Finished difference Result 2851 states and 8366 transitions. [2020-04-18 20:06:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-04-18 20:06:04,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-04-18 20:06:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:04,785 INFO L225 Difference]: With dead ends: 2851 [2020-04-18 20:06:04,785 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:06:04,788 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1499, Invalid=9213, Unknown=0, NotChecked=0, Total=10712 [2020-04-18 20:06:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:06:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:06:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:06:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:06:04,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-04-18 20:06:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:04,789 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:06:04,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 20:06:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:06:04,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:04,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:06:04 BasicIcfg [2020-04-18 20:06:04,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:06:04,795 INFO L168 Benchmark]: Toolchain (without parser) took 9557.14 ms. Allocated memory was 144.7 MB in the beginning and 441.5 MB in the end (delta: 296.7 MB). Free memory was 99.1 MB in the beginning and 317.0 MB in the end (delta: -217.8 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,796 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.02 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 97.1 MB in the beginning and 158.2 MB in the end (delta: -61.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.50 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,798 INFO L168 Benchmark]: Boogie Preprocessor took 44.96 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,799 INFO L168 Benchmark]: RCFGBuilder took 447.00 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 132.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,800 INFO L168 Benchmark]: TraceAbstraction took 8198.24 ms. Allocated memory was 201.9 MB in the beginning and 441.5 MB in the end (delta: 239.6 MB). Free memory was 132.0 MB in the beginning and 317.0 MB in the end (delta: -185.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:04,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.02 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 97.1 MB in the beginning and 158.2 MB in the end (delta: -61.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 83.50 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.96 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.00 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 132.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8198.24 ms. Allocated memory was 201.9 MB in the beginning and 441.5 MB in the end (delta: 239.6 MB). Free memory was 132.0 MB in the beginning and 317.0 MB in the end (delta: -185.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 444 SDtfs, 1019 SDslu, 2677 SDs, 0 SdLazy, 650 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3710 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8473occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...