/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:36:44,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:36:44,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:36:44,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:36:44,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:36:44,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:36:44,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:36:44,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:36:44,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:36:44,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:36:44,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:36:44,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:36:44,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:36:44,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:36:44,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:36:44,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:36:44,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:36:44,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:36:44,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:36:44,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:36:44,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:36:44,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:36:44,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:36:44,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:36:44,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:36:44,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:36:44,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:36:44,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:36:44,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:36:44,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:36:44,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:36:44,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:36:44,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:36:44,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:36:44,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:36:44,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:36:44,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:36:44,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:36:44,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:36:44,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:36:44,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:36:44,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:36:44,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:36:44,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:36:44,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:36:44,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:36:44,967 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:36:44,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:36:44,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:36:44,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:36:44,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:36:44,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:36:44,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:36:44,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:36:44,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:36:44,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:36:44,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:36:44,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:36:44,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:36:44,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:36:44,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:36:44,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:36:44,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:36:44,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:36:44,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:36:44,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:36:44,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:36:44,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:36:44,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:36:44,973 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:36:44,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:36:44,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:36:44,974 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:36:45,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:36:45,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:36:45,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:36:45,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:36:45,266 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:36:45,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 13:36:45,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a760e2576/5ba3816c5e3a4afb8a315e50c27ace60/FLAGe53511e25 [2020-10-16 13:36:45,858 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:36:45,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 13:36:45,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a760e2576/5ba3816c5e3a4afb8a315e50c27ace60/FLAGe53511e25 [2020-10-16 13:36:46,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a760e2576/5ba3816c5e3a4afb8a315e50c27ace60 [2020-10-16 13:36:46,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:36:46,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:36:46,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:36:46,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:36:46,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:36:46,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19099778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46, skipping insertion in model container [2020-10-16 13:36:46,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:36:46,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:36:46,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:36:46,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:36:46,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:36:46,881 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:36:46,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46 WrapperNode [2020-10-16 13:36:46,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:36:46,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:36:46,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:36:46,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:36:46,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:36:46,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:36:46,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:36:46,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:36:46,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... [2020-10-16 13:36:46,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:36:46,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:36:46,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:36:46,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:36:46,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:36:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:36:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:36:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:36:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:36:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:36:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:36:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:36:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:36:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:36:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:36:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:36:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:36:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:36:47,034 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:36:47,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:36:47,353 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:36:47,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:47 BoogieIcfgContainer [2020-10-16 13:36:47,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:36:47,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:36:47,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:36:47,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:36:47,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:36:46" (1/3) ... [2020-10-16 13:36:47,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b0a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:47, skipping insertion in model container [2020-10-16 13:36:47,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:46" (2/3) ... [2020-10-16 13:36:47,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b0a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:47, skipping insertion in model container [2020-10-16 13:36:47,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:47" (3/3) ... [2020-10-16 13:36:47,366 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-10-16 13:36:47,380 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:36:47,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:36:47,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:36:47,391 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:36:47,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,426 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,431 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,432 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,432 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,440 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,440 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,445 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,447 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,450 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,450 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:47,453 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:36:47,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:36:47,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:36:47,490 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:36:47,490 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:36:47,490 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:36:47,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:36:47,491 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:36:47,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:36:47,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:36:47,507 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:36:47,508 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:47,511 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:47,514 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:47,571 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:36:47,571 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:36:47,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:36:47,579 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:36:48,814 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 13:36:48,814 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 13:36:48,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 13:36:48,853 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 13:36:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 13:36:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:36:48,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:48,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:48,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 13:36:48,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:48,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856417234] [2020-10-16 13:36:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:49,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856417234] [2020-10-16 13:36:49,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:49,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:49,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674168583] [2020-10-16 13:36:49,067 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:49,070 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:49,083 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:36:49,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:49,086 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:49,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:36:49,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:49,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:36:49,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:36:49,104 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 13:36:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:49,128 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 13:36:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:36:49,130 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:36:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:49,147 INFO L225 Difference]: With dead ends: 362 [2020-10-16 13:36:49,147 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 13:36:49,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:36:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 13:36:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 13:36:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 13:36:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 13:36:49,226 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 13:36:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:49,228 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 13:36:49,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:36:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 13:36:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:36:49,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:49,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:49,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:36:49,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 13:36:49,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:49,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616802613] [2020-10-16 13:36:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:49,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616802613] [2020-10-16 13:36:49,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:49,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:49,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [490131836] [2020-10-16 13:36:49,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:49,393 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:49,394 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:36:49,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:49,395 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:49,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:49,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:49,398 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 13:36:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:49,436 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-16 13:36:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:49,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:36:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:49,440 INFO L225 Difference]: With dead ends: 346 [2020-10-16 13:36:49,441 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 13:36:49,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 13:36:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 13:36:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 13:36:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-16 13:36:49,468 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-16 13:36:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:49,469 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-16 13:36:49,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-16 13:36:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:36:49,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:49,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:49,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:36:49,471 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash -397112394, now seen corresponding path program 1 times [2020-10-16 13:36:49,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:49,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925442560] [2020-10-16 13:36:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:49,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925442560] [2020-10-16 13:36:49,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:49,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:49,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1631754143] [2020-10-16 13:36:49,542 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:49,543 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:49,545 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-16 13:36:49,546 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:49,591 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:49,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:49,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:49,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:49,592 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-16 13:36:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:49,614 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-10-16 13:36:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:49,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:36:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:49,618 INFO L225 Difference]: With dead ends: 310 [2020-10-16 13:36:49,618 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 13:36:49,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 13:36:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 13:36:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 13:36:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-10-16 13:36:49,637 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-10-16 13:36:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:49,637 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-10-16 13:36:49,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-10-16 13:36:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:36:49,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:49,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:49,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:36:49,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-10-16 13:36:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:49,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459971104] [2020-10-16 13:36:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:49,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459971104] [2020-10-16 13:36:49,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:49,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2015931006] [2020-10-16 13:36:49,755 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:49,756 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:49,759 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-10-16 13:36:49,759 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:49,824 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:49,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:49,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:49,825 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-10-16 13:36:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:49,869 INFO L93 Difference]: Finished difference Result 320 states and 860 transitions. [2020-10-16 13:36:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:36:49,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:36:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:49,872 INFO L225 Difference]: With dead ends: 320 [2020-10-16 13:36:49,872 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 13:36:49,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 13:36:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-16 13:36:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 13:36:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-10-16 13:36:49,881 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 11 [2020-10-16 13:36:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:49,881 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-10-16 13:36:49,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-10-16 13:36:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:36:49,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:49,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:49,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:36:49,883 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:49,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:49,884 INFO L82 PathProgramCache]: Analyzing trace with hash 625195173, now seen corresponding path program 1 times [2020-10-16 13:36:49,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:49,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176625984] [2020-10-16 13:36:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176625984] [2020-10-16 13:36:49,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:49,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:49,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1316729166] [2020-10-16 13:36:49,935 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:49,936 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:49,939 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-16 13:36:49,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:49,993 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:49,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:49,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:49,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:49,995 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-10-16 13:36:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:50,012 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-10-16 13:36:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:50,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:36:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:50,014 INFO L225 Difference]: With dead ends: 170 [2020-10-16 13:36:50,014 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:36:50,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:36:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:36:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:36:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-16 13:36:50,021 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-16 13:36:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:50,021 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-16 13:36:50,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-16 13:36:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:36:50,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:50,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:50,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:36:50,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:50,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:50,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-10-16 13:36:50,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:50,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929471184] [2020-10-16 13:36:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:50,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929471184] [2020-10-16 13:36:50,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:50,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:50,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1244186437] [2020-10-16 13:36:50,093 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:50,111 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:50,117 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-10-16 13:36:50,117 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:50,191 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:50,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:50,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:50,192 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 5 states. [2020-10-16 13:36:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:50,233 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-10-16 13:36:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:36:50,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:36:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:50,235 INFO L225 Difference]: With dead ends: 176 [2020-10-16 13:36:50,235 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 13:36:50,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 13:36:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-16 13:36:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 13:36:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-10-16 13:36:50,240 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-10-16 13:36:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:50,240 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-10-16 13:36:50,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-10-16 13:36:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:36:50,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:50,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:50,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:36:50,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:50,242 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-10-16 13:36:50,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:50,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488840864] [2020-10-16 13:36:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:50,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488840864] [2020-10-16 13:36:50,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:50,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:50,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1736257732] [2020-10-16 13:36:50,284 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:50,285 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:50,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-10-16 13:36:50,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:50,305 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,326 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,337 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,346 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,356 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,393 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5007#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:36:50,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:50,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:50,394 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-10-16 13:36:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:50,444 INFO L93 Difference]: Finished difference Result 90 states and 177 transitions. [2020-10-16 13:36:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:36:50,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 13:36:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:50,445 INFO L225 Difference]: With dead ends: 90 [2020-10-16 13:36:50,445 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 13:36:50,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:36:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 13:36:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 13:36:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:36:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-10-16 13:36:50,449 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 14 [2020-10-16 13:36:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:50,449 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-10-16 13:36:50,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-10-16 13:36:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:36:50,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:50,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:50,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:36:50,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-10-16 13:36:50,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:50,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845491201] [2020-10-16 13:36:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:50,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845491201] [2020-10-16 13:36:50,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:50,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:36:50,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1702162511] [2020-10-16 13:36:50,502 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:50,504 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:50,511 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 74 transitions. [2020-10-16 13:36:50,511 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:50,529 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:50,621 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5244#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:36:50,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:36:50,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:50,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:36:50,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:36:50,622 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 7 states. [2020-10-16 13:36:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:50,669 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-10-16 13:36:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:36:50,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-16 13:36:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:50,670 INFO L225 Difference]: With dead ends: 61 [2020-10-16 13:36:50,670 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 13:36:50,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 13:36:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 13:36:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 13:36:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 13:36:50,673 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-16 13:36:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:50,673 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 13:36:50,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:36:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 13:36:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:36:50,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:50,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:50,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:36:50,674 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-10-16 13:36:50,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:50,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613583898] [2020-10-16 13:36:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:36:50,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613583898] [2020-10-16 13:36:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:50,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:50,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1365567618] [2020-10-16 13:36:50,717 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:50,719 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:50,724 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 70 transitions. [2020-10-16 13:36:50,724 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:50,728 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:50,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:50,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:50,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:50,730 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-10-16 13:36:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:50,741 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 13:36:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:36:50,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 13:36:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:50,742 INFO L225 Difference]: With dead ends: 54 [2020-10-16 13:36:50,742 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:36:50,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:36:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:36:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:36:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:36:50,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:36:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:50,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:36:50,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:36:50,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:36:50,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:36:50,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:36:50 BasicIcfg [2020-10-16 13:36:50,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:36:50,750 INFO L168 Benchmark]: Toolchain (without parser) took 4582.34 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 102.5 MB in the beginning and 95.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 112.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,751 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.82 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 163.7 MB in the end (delta: -61.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.09 ms. Allocated memory is still 205.5 MB. Free memory was 163.7 MB in the beginning and 161.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,754 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 ms. Allocated memory is still 205.5 MB. Free memory was 161.6 MB in the beginning and 159.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,754 INFO L168 Benchmark]: RCFGBuilder took 395.33 ms. Allocated memory is still 205.5 MB. Free memory was 159.7 MB in the beginning and 138.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,755 INFO L168 Benchmark]: TraceAbstraction took 3389.45 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 137.2 MB in the beginning and 95.3 MB in the end (delta: 41.8 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:50,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.82 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 163.7 MB in the end (delta: -61.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.09 ms. Allocated memory is still 205.5 MB. Free memory was 163.7 MB in the beginning and 161.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.43 ms. Allocated memory is still 205.5 MB. Free memory was 161.6 MB in the beginning and 159.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.33 ms. Allocated memory is still 205.5 MB. Free memory was 159.7 MB in the beginning and 138.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3389.45 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 137.2 MB in the beginning and 95.3 MB in the end (delta: 41.8 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 643 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 193 SDtfs, 160 SDslu, 286 SDs, 0 SdLazy, 107 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...