/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/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:04:54,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:04:54,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:04:54,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:04:54,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:04:54,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:04:54,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:04:54,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:04:54,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:04:54,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:04:54,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:04:54,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:04:54,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:04:54,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:04:54,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:04:54,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:04:54,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:04:54,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:04:54,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:04:54,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:04:54,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:04:54,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:04:54,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:04:54,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:04:54,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:04:54,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:04:54,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:04:54,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:04:54,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:04:54,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:04:54,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:04:54,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:04:54,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:04:54,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:04:54,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:04:54,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:04:54,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:04:54,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:04:54,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:04:54,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:04:54,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:04:54,879 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 20:04:54,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:04:54,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:04:54,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:04:54,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:04:54,921 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:04:54,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:04:54,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:04:54,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:04:54,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:04:54,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:04:54,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:04:54,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:04:54,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:04:54,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:04:54,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:04:54,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:04:54,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:04:54,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:04:54,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:04:54,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:04:54,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:04:54,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:04:54,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:04:54,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:04:54,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:04:54,928 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:04:54,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:04:54,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:04:54,929 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:04:54,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:04:54,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:04:55,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:04:55,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:04:55,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:04:55,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:04:55,249 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:04:55,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-04-18 20:04:55,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420e50b78/7d72c313a8244543a97c35e78671282f/FLAGe552e982a [2020-04-18 20:04:55,792 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:04:55,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-04-18 20:04:55,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420e50b78/7d72c313a8244543a97c35e78671282f/FLAGe552e982a [2020-04-18 20:04:56,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420e50b78/7d72c313a8244543a97c35e78671282f [2020-04-18 20:04:56,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:04:56,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:04:56,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:56,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:04:56,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:04:56,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:56,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5721ebdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56, skipping insertion in model container [2020-04-18 20:04:56,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:56,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:04:56,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:04:56,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:56,802 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:04:56,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:56,962 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:04:56,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56 WrapperNode [2020-04-18 20:04:56,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:56,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:56,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:04:56,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:04:56,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:56,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:57,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:04:57,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:04:57,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:04:57,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (1/1) ... [2020-04-18 20:04:57,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:04:57,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:04:57,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:04:57,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:04:57,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (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 20:04:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:04:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:04:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:04:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:04:57,125 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:04:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:04:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:04:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:04:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:04:57,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:04:57,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:04:57,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:04:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:04:57,128 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 20:04:57,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:04:57,520 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:04:57,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:57 BoogieIcfgContainer [2020-04-18 20:04:57,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:04:57,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:04:57,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:04:57,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:04:57,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:04:56" (1/3) ... [2020-04-18 20:04:57,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a11d3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:57, skipping insertion in model container [2020-04-18 20:04:57,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:56" (2/3) ... [2020-04-18 20:04:57,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a11d3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:57, skipping insertion in model container [2020-04-18 20:04:57,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:57" (3/3) ... [2020-04-18 20:04:57,533 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-04-18 20:04:57,547 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:04:57,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:04:57,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:04:57,556 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:04:57,595 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,595 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,595 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,596 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,597 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,597 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,599 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,599 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,600 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,600 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,600 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,601 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,602 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,602 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,602 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,603 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,604 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,604 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,613 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,614 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,614 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,614 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,622 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,623 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,623 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,623 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,630 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,630 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,630 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,631 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:57,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:04:57,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:04:57,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:04:57,673 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:04:57,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:04:57,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:04:57,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:04:57,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:04:57,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:04:57,686 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 20:04:58,163 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 20:04:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 20:04:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:04:58,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:58,208 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] [2020-04-18 20:04:58,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:58,215 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 1 times [2020-04-18 20:04:58,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:58,221 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1799209626] [2020-04-18 20:04:58,233 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:58,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:04:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 20:04:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:04:58,252 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 2 times [2020-04-18 20:04:58,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:58,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416230656] [2020-04-18 20:04:58,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:58,762 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 20:04:58,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416230656] [2020-04-18 20:04:58,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:58,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:04:58,766 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:58,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:58,780 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:04:58,780 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:58,845 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:04:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:04:58,852 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 20:04:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:58,972 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 20:04:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 20:04:58,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:58,974 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1799209626] [2020-04-18 20:04:58,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:58,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:04:58,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1799209626] [2020-04-18 20:04:58,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:04:58,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:58,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:04:58,983 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 20:04:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:59,494 INFO L93 Difference]: Finished difference Result 19956 states and 68898 transitions. [2020-04-18 20:04:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:04:59,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 20:04:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:59,567 INFO L225 Difference]: With dead ends: 19956 [2020-04-18 20:04:59,567 INFO L226 Difference]: Without dead ends: 5718 [2020-04-18 20:04:59,569 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 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 20:04:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2020-04-18 20:04:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4428. [2020-04-18 20:04:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-04-18 20:04:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 14501 transitions. [2020-04-18 20:04:59,961 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 14501 transitions. Word has length 36 [2020-04-18 20:04:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:59,962 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 14501 transitions. [2020-04-18 20:04:59,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:04:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 14501 transitions. [2020-04-18 20:04:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:04:59,972 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:59,972 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] [2020-04-18 20:04:59,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:59,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 1 times [2020-04-18 20:04:59,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:59,973 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1948053741] [2020-04-18 20:04:59,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:59,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 20:04:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 20:04:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:04:59,980 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 2 times [2020-04-18 20:04:59,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:59,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733965626] [2020-04-18 20:04:59,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:00,139 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 20:05:00,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733965626] [2020-04-18 20:05:00,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:00,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:00,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:00,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:00,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 20:05:00,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:00,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:00,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:00,197 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-04-18 20:05:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:00,265 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 20:05:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 20:05:00,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:00,266 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1948053741] [2020-04-18 20:05:00,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:00,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:00,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1948053741] [2020-04-18 20:05:00,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:00,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:00,268 INFO L87 Difference]: Start difference. First operand 4428 states and 14501 transitions. Second operand 6 states. [2020-04-18 20:05:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:00,414 INFO L93 Difference]: Finished difference Result 4778 states and 15501 transitions. [2020-04-18 20:05:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:05:00,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 20:05:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:00,438 INFO L225 Difference]: With dead ends: 4778 [2020-04-18 20:05:00,439 INFO L226 Difference]: Without dead ends: 3082 [2020-04-18 20:05:00,441 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 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 20:05:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-04-18 20:05:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2961. [2020-04-18 20:05:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-04-18 20:05:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 9725 transitions. [2020-04-18 20:05:00,701 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 9725 transitions. Word has length 38 [2020-04-18 20:05:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:00,704 INFO L479 AbstractCegarLoop]: Abstraction has 2961 states and 9725 transitions. [2020-04-18 20:05:00,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 9725 transitions. [2020-04-18 20:05:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:00,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:00,714 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 20:05:00,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 1 times [2020-04-18 20:05:00,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:00,719 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1819089041] [2020-04-18 20:05:00,722 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:00,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 20:05:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 20:05:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:00,739 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:00,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:00,740 INFO L82 PathProgramCache]: Analyzing trace with hash -185158389, now seen corresponding path program 2 times [2020-04-18 20:05:00,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:00,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42515488] [2020-04-18 20:05:00,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:00,942 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 20:05:00,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42515488] [2020-04-18 20:05:00,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:00,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:00,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:00,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:00,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 214 transitions. [2020-04-18 20:05:00,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:01,004 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:01,005 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 6 states. [2020-04-18 20:05:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:01,148 INFO L93 Difference]: Finished difference Result 214 states and 448 transitions. [2020-04-18 20:05:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions. [2020-04-18 20:05:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:01,149 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1314279643, now seen corresponding path program 3 times [2020-04-18 20:05:01,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:01,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988433763] [2020-04-18 20:05:01,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:01,304 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 20:05:01,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988433763] [2020-04-18 20:05:01,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:01,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:01,305 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:01,309 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:01,325 INFO L259 McrAutomatonBuilder]: Finished intersection with 142 states and 263 transitions. [2020-04-18 20:05:01,325 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:01,627 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 20:05:01,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:01,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:01,628 INFO L87 Difference]: Start difference. First operand 214 states and 448 transitions. Second operand 15 states. [2020-04-18 20:05:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:02,298 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:02,300 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 4 times [2020-04-18 20:05:02,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:02,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311277605] [2020-04-18 20:05:02,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:02,463 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 20:05:02,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311277605] [2020-04-18 20:05:02,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:02,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:02,465 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:02,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:02,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 226 transitions. [2020-04-18 20:05:02,499 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:02,611 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:02,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:02,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 20:05:02,614 INFO L87 Difference]: Start difference. First operand 297 states and 559 transitions. Second operand 6 states. [2020-04-18 20:05:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:02,686 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:02,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:02,688 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1819089041] [2020-04-18 20:05:02,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:02,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:02,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1819089041] [2020-04-18 20:05:02,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 20:05:02,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 20:05:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 20:05:02,691 INFO L87 Difference]: Start difference. First operand 2961 states and 9725 transitions. Second operand 20 states. [2020-04-18 20:05:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:05,024 INFO L93 Difference]: Finished difference Result 7021 states and 22370 transitions. [2020-04-18 20:05:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 20:05:05,025 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-04-18 20:05:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:05,047 INFO L225 Difference]: With dead ends: 7021 [2020-04-18 20:05:05,047 INFO L226 Difference]: Without dead ends: 2804 [2020-04-18 20:05:05,051 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1641, Invalid=5669, Unknown=0, NotChecked=0, Total=7310 [2020-04-18 20:05:05,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-04-18 20:05:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2420. [2020-04-18 20:05:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-04-18 20:05:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 7709 transitions. [2020-04-18 20:05:05,163 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 7709 transitions. Word has length 41 [2020-04-18 20:05:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:05,164 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 7709 transitions. [2020-04-18 20:05:05,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 20:05:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 7709 transitions. [2020-04-18 20:05:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:05,170 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:05,170 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] [2020-04-18 20:05:05,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1211305480, now seen corresponding path program 1 times [2020-04-18 20:05:05,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:05,172 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [627169714] [2020-04-18 20:05:05,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:05,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 20:05:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 20:05:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:05,182 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1998542128, now seen corresponding path program 2 times [2020-04-18 20:05:05,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:05,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001790126] [2020-04-18 20:05:05,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:05,296 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 20:05:05,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001790126] [2020-04-18 20:05:05,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:05,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:05,297 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:05,302 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:05,318 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 225 transitions. [2020-04-18 20:05:05,319 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:05,350 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:05,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:05,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:05,351 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 6 states. [2020-04-18 20:05:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:05,446 INFO L93 Difference]: Finished difference Result 271 states and 594 transitions. [2020-04-18 20:05:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 594 transitions. [2020-04-18 20:05:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:05,447 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1692279434, now seen corresponding path program 3 times [2020-04-18 20:05:05,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:05,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125233753] [2020-04-18 20:05:05,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:05,555 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 20:05:05,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125233753] [2020-04-18 20:05:05,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:05,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:05,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:05,561 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:05,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 343 transitions. [2020-04-18 20:05:05,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:05,684 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 20:05:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 20:05:05,685 INFO L87 Difference]: Start difference. First operand 271 states and 594 transitions. Second operand 10 states. [2020-04-18 20:05:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:05,842 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:05,844 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash -345747796, now seen corresponding path program 4 times [2020-04-18 20:05:05,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:05,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780897574] [2020-04-18 20:05:05,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:05,975 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 20:05:05,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780897574] [2020-04-18 20:05:05,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:05,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:05,976 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:05,981 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:05,997 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 275 transitions. [2020-04-18 20:05:05,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:06,075 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-04-18 20:05:06,078 INFO L87 Difference]: Start difference. First operand 396 states and 821 transitions. Second operand 6 states. [2020-04-18 20:05:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:06,187 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:06,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:06,189 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [627169714] [2020-04-18 20:05:06,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:06,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:06,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [627169714] [2020-04-18 20:05:06,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:06,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:05:06,191 INFO L87 Difference]: Start difference. First operand 2420 states and 7709 transitions. Second operand 15 states. [2020-04-18 20:05:06,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:06,954 INFO L93 Difference]: Finished difference Result 4070 states and 12511 transitions. [2020-04-18 20:05:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 20:05:06,955 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-04-18 20:05:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:06,968 INFO L225 Difference]: With dead ends: 4070 [2020-04-18 20:05:06,969 INFO L226 Difference]: Without dead ends: 2009 [2020-04-18 20:05:06,970 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=447, Invalid=1905, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 20:05:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-04-18 20:05:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1817. [2020-04-18 20:05:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-04-18 20:05:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 5534 transitions. [2020-04-18 20:05:07,024 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 5534 transitions. Word has length 42 [2020-04-18 20:05:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:07,026 INFO L479 AbstractCegarLoop]: Abstraction has 1817 states and 5534 transitions. [2020-04-18 20:05:07,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 5534 transitions. [2020-04-18 20:05:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:07,030 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:07,030 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] [2020-04-18 20:05:07,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:07,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1356091049, now seen corresponding path program 1 times [2020-04-18 20:05:07,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:07,032 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1952691571] [2020-04-18 20:05:07,033 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:07,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 908 transitions. [2020-04-18 20:05:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states. [2020-04-18 20:05:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:07,046 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash -697482609, now seen corresponding path program 2 times [2020-04-18 20:05:07,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:07,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841993653] [2020-04-18 20:05:07,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:07,151 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 20:05:07,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841993653] [2020-04-18 20:05:07,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:07,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:07,153 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:07,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:07,173 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 198 transitions. [2020-04-18 20:05:07,174 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:07,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:07,208 INFO L87 Difference]: Start difference. First operand 381 states. Second operand 6 states. [2020-04-18 20:05:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:07,304 INFO L93 Difference]: Finished difference Result 441 states and 1036 transitions. [2020-04-18 20:05:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1036 transitions. [2020-04-18 20:05:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:07,305 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1003745303, now seen corresponding path program 3 times [2020-04-18 20:05:07,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:07,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009930448] [2020-04-18 20:05:07,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:07,408 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 20:05:07,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009930448] [2020-04-18 20:05:07,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:07,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:07,411 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:07,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:07,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 228 transitions. [2020-04-18 20:05:07,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:07,574 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 20:05:07,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:05:07,575 INFO L87 Difference]: Start difference. First operand 441 states and 1036 transitions. Second operand 11 states. [2020-04-18 20:05:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:07,809 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:07,811 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:07,811 INFO L82 PathProgramCache]: Analyzing trace with hash 219010221, now seen corresponding path program 4 times [2020-04-18 20:05:07,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:07,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549618222] [2020-04-18 20:05:07,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:07,917 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 20:05:07,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549618222] [2020-04-18 20:05:07,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:07,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:07,919 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:07,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:07,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 189 states and 372 transitions. [2020-04-18 20:05:07,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:08,054 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:08,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:08,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-18 20:05:08,056 INFO L87 Difference]: Start difference. First operand 744 states and 1715 transitions. Second operand 6 states. [2020-04-18 20:05:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:08,249 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:08,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:08,252 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1952691571] [2020-04-18 20:05:08,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:08,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:08,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1952691571] [2020-04-18 20:05:08,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:05:08,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:05:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:05:08,255 INFO L87 Difference]: Start difference. First operand 1817 states and 5534 transitions. Second operand 16 states. [2020-04-18 20:05:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:08,853 INFO L93 Difference]: Finished difference Result 2510 states and 7532 transitions. [2020-04-18 20:05:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 20:05:08,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-04-18 20:05:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:08,874 INFO L225 Difference]: With dead ends: 2510 [2020-04-18 20:05:08,874 INFO L226 Difference]: Without dead ends: 1262 [2020-04-18 20:05:08,878 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 20:05:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-04-18 20:05:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1128. [2020-04-18 20:05:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-04-18 20:05:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3350 transitions. [2020-04-18 20:05:08,925 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3350 transitions. Word has length 44 [2020-04-18 20:05:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:08,926 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 3350 transitions. [2020-04-18 20:05:08,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:05:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3350 transitions. [2020-04-18 20:05:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:08,931 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:08,931 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] [2020-04-18 20:05:08,931 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash 479667934, now seen corresponding path program 1 times [2020-04-18 20:05:08,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:08,934 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2024019855] [2020-04-18 20:05:08,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:08,967 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 20:05:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 20:05:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:08,984 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 791367566, now seen corresponding path program 2 times [2020-04-18 20:05:08,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:08,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749444262] [2020-04-18 20:05:08,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:09,114 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 20:05:09,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749444262] [2020-04-18 20:05:09,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:09,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:09,116 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:09,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:09,142 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 334 transitions. [2020-04-18 20:05:09,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:09,245 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:05:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:09,246 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 8 states. [2020-04-18 20:05:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:09,727 INFO L93 Difference]: Finished difference Result 1748 states and 4915 transitions. [2020-04-18 20:05:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4915 transitions. [2020-04-18 20:05:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:09,732 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:09,733 INFO L82 PathProgramCache]: Analyzing trace with hash -206686002, now seen corresponding path program 3 times [2020-04-18 20:05:09,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:09,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308055983] [2020-04-18 20:05:09,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:09,809 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 20:05:09,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308055983] [2020-04-18 20:05:09,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:09,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:09,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:09,814 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:09,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 787 transitions. [2020-04-18 20:05:09,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:09,933 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:09,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:09,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:05:09,934 INFO L87 Difference]: Start difference. First operand 1748 states and 4915 transitions. Second operand 6 states. [2020-04-18 20:05:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:10,052 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:10,057 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash 381496398, now seen corresponding path program 4 times [2020-04-18 20:05:10,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:10,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959081113] [2020-04-18 20:05:10,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:10,152 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 20:05:10,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959081113] [2020-04-18 20:05:10,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:10,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:10,153 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:10,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:10,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 480 transitions. [2020-04-18 20:05:10,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:10,369 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:10,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:10,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-04-18 20:05:10,370 INFO L87 Difference]: Start difference. First operand 2032 states and 5647 transitions. Second operand 8 states. [2020-04-18 20:05:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:10,627 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:10,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:10,631 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2024019855] [2020-04-18 20:05:10,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:10,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:10,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2024019855] [2020-04-18 20:05:10,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:10,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:10,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:10,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:05:10,634 INFO L87 Difference]: Start difference. First operand 1128 states and 3350 transitions. Second operand 15 states. [2020-04-18 20:05:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:11,373 INFO L93 Difference]: Finished difference Result 1268 states and 3644 transitions. [2020-04-18 20:05:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 20:05:11,374 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-04-18 20:05:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:11,380 INFO L225 Difference]: With dead ends: 1268 [2020-04-18 20:05:11,380 INFO L226 Difference]: Without dead ends: 872 [2020-04-18 20:05:11,389 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=456, Invalid=2850, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 20:05:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-04-18 20:05:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 789. [2020-04-18 20:05:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-04-18 20:05:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2233 transitions. [2020-04-18 20:05:11,412 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2233 transitions. Word has length 46 [2020-04-18 20:05:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:11,413 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 2233 transitions. [2020-04-18 20:05:11,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2233 transitions. [2020-04-18 20:05:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:11,414 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:11,415 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] [2020-04-18 20:05:11,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:11,416 INFO L82 PathProgramCache]: Analyzing trace with hash -103241697, now seen corresponding path program 1 times [2020-04-18 20:05:11,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:11,416 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [818102515] [2020-04-18 20:05:11,419 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:11,468 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 20:05:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 20:05:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:11,490 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 932076909, now seen corresponding path program 2 times [2020-04-18 20:05:11,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:11,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366917143] [2020-04-18 20:05:11,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:11,605 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 20:05:11,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366917143] [2020-04-18 20:05:11,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:11,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:11,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:11,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:11,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 418 transitions. [2020-04-18 20:05:11,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:11,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:05:11,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:11,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:11,742 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 20:05:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:12,260 INFO L93 Difference]: Finished difference Result 4326 states and 13428 transitions. [2020-04-18 20:05:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 13428 transitions. [2020-04-18 20:05:12,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:12,270 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:12,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:12,270 INFO L82 PathProgramCache]: Analyzing trace with hash -65976659, now seen corresponding path program 3 times [2020-04-18 20:05:12,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:12,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099924591] [2020-04-18 20:05:12,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:12,354 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 20:05:12,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099924591] [2020-04-18 20:05:12,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:12,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:12,355 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:12,362 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:12,401 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 562 transitions. [2020-04-18 20:05:12,402 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:12,421 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:12,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:12,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:12,422 INFO L87 Difference]: Start difference. First operand 4326 states and 13428 transitions. Second operand 6 states. [2020-04-18 20:05:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:12,516 INFO L93 Difference]: Finished difference Result 5306 states and 16168 transitions. [2020-04-18 20:05:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 16168 transitions. [2020-04-18 20:05:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:12,527 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash -195492887, now seen corresponding path program 4 times [2020-04-18 20:05:12,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:12,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505365320] [2020-04-18 20:05:12,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:12,611 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 20:05:12,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505365320] [2020-04-18 20:05:12,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:12,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:12,613 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:12,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:12,661 INFO L259 McrAutomatonBuilder]: Finished intersection with 253 states and 556 transitions. [2020-04-18 20:05:12,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:12,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:12,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:12,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-04-18 20:05:12,742 INFO L87 Difference]: Start difference. First operand 5306 states and 16168 transitions. Second operand 8 states. [2020-04-18 20:05:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:12,995 INFO L93 Difference]: Finished difference Result 7650 states and 22350 transitions. [2020-04-18 20:05:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 22350 transitions. [2020-04-18 20:05:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:13,013 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:05:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash 289841227, now seen corresponding path program 5 times [2020-04-18 20:05:13,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:13,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719654724] [2020-04-18 20:05:13,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:13,107 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 20:05:13,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719654724] [2020-04-18 20:05:13,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:13,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:13,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:13,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:13,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 445 states and 1135 transitions. [2020-04-18 20:05:13,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:13,436 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 20:05:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:13,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 20:05:13,437 INFO L87 Difference]: Start difference. First operand 7650 states and 22350 transitions. Second operand 11 states. [2020-04-18 20:05:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:14,035 INFO L93 Difference]: Finished difference Result 8694 states and 25270 transitions. [2020-04-18 20:05:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 25270 transitions. [2020-04-18 20:05:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:14,051 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 20:05:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash -245301795, now seen corresponding path program 6 times [2020-04-18 20:05:14,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:14,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001422679] [2020-04-18 20:05:14,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:14,113 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 20:05:14,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001422679] [2020-04-18 20:05:14,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:14,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:14,114 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:14,119 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:14,203 INFO L259 McrAutomatonBuilder]: Finished intersection with 458 states and 1154 transitions. [2020-04-18 20:05:14,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:14,400 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 20:05:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:14,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=2102, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 20:05:14,401 INFO L87 Difference]: Start difference. First operand 8694 states and 25270 transitions. Second operand 10 states. [2020-04-18 20:05:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:14,659 INFO L93 Difference]: Finished difference Result 10658 states and 30842 transitions. [2020-04-18 20:05:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 30842 transitions. [2020-04-18 20:05:14,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:14,675 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 20:05:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:14,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1945469681, now seen corresponding path program 7 times [2020-04-18 20:05:14,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:14,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181101998] [2020-04-18 20:05:14,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:14,764 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 20:05:14,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181101998] [2020-04-18 20:05:14,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:14,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:14,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:14,769 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:14,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 519 transitions. [2020-04-18 20:05:14,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:15,098 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3120, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 20:05:15,100 INFO L87 Difference]: Start difference. First operand 10658 states and 30842 transitions. Second operand 8 states. [2020-04-18 20:05:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:15,650 INFO L93 Difference]: Finished difference Result 10786 states and 30962 transitions. [2020-04-18 20:05:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10786 states and 30962 transitions. [2020-04-18 20:05:15,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:15,665 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [818102515] [2020-04-18 20:05:15,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:15,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:15,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [818102515] [2020-04-18 20:05:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 20:05:15,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 20:05:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4154, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 20:05:15,668 INFO L87 Difference]: Start difference. First operand 789 states and 2233 transitions. Second operand 28 states. [2020-04-18 20:05:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:17,481 INFO L93 Difference]: Finished difference Result 1442 states and 4075 transitions. [2020-04-18 20:05:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-04-18 20:05:17,481 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-04-18 20:05:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:17,482 INFO L225 Difference]: With dead ends: 1442 [2020-04-18 20:05:17,482 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:05:17,485 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 413 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1674, Invalid=10316, Unknown=0, NotChecked=0, Total=11990 [2020-04-18 20:05:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:05:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:05:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:05:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:05:17,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 20:05:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:17,486 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:05:17,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 20:05:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:05:17,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:17,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:05:17 BasicIcfg [2020-04-18 20:05:17,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:05:17,493 INFO L168 Benchmark]: Toolchain (without parser) took 21317.49 ms. Allocated memory was 138.9 MB in the beginning and 664.8 MB in the end (delta: 525.9 MB). Free memory was 102.7 MB in the beginning and 225.8 MB in the end (delta: -123.1 MB). Peak memory consumption was 402.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,493 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 20:05:17,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.84 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 158.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.21 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,495 INFO L168 Benchmark]: Boogie Preprocessor took 25.49 ms. Allocated memory is still 204.5 MB. Free memory was 156.8 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,495 INFO L168 Benchmark]: RCFGBuilder took 478.72 ms. Allocated memory is still 204.5 MB. Free memory was 154.9 MB in the beginning and 132.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,496 INFO L168 Benchmark]: TraceAbstraction took 19964.64 ms. Allocated memory was 204.5 MB in the beginning and 664.8 MB in the end (delta: 460.3 MB). Free memory was 132.5 MB in the beginning and 225.8 MB in the end (delta: -93.3 MB). Peak memory consumption was 367.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,499 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 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.84 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 158.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.21 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.49 ms. Allocated memory is still 204.5 MB. Free memory was 156.8 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.72 ms. Allocated memory is still 204.5 MB. Free memory was 154.9 MB in the beginning and 132.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19964.64 ms. Allocated memory was 204.5 MB in the beginning and 664.8 MB in the end (delta: 460.3 MB). Free memory was 132.5 MB in the beginning and 225.8 MB in the end (delta: -93.3 MB). Peak memory consumption was 367.1 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 857 SDtfs, 2466 SDslu, 6024 SDs, 0 SdLazy, 1864 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1580 GetRequests, 1217 SyntacticMatches, 5 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8890 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 2204 StatesRemovedByMinimization, 6 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...