/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/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:36:07,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:36:07,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:36:07,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:36:07,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:36:07,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:36:07,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:36:07,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:36:07,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:36:07,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:36:07,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:36:07,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:36:07,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:36:07,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:36:07,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:36:07,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:36:07,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:36:07,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:36:07,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:36:07,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:36:07,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:36:07,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:36:07,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:36:07,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:36:07,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 00:36:07,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 00:36:07,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 00:36:07,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 00:36:07,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 00:36:07,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 00:36:07,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:36:07,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:36:07,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:36:07,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:36:07,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:36:07,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:36:07,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:36:07,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:36:07,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:36:07,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:36:07,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:36:07,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 00:36:07,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:36:07,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:36:07,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:36:07,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:36:07,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:36:07,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:36:07,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:36:07,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:36:07,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:36:07,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:36:07,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:36:07,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:36:07,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:36:07,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:36:07,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:36:07,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:36:07,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:36:07,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:36:07,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:36:07,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:36:07,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:36:07,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:36:07,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:36:07,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:36:07,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:36:07,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:36:07,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:36:07,999 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:36:07,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:36:08,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:36:08,000 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:36:08,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:36:08,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:36:08,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:36:08,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:36:08,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:36:08,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-10-22 00:36:08,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d099ca891/410e15d9e59b466396707a1dc38953ee/FLAGea82fa2b7 [2020-10-22 00:36:08,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:36:08,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-10-22 00:36:08,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d099ca891/410e15d9e59b466396707a1dc38953ee/FLAGea82fa2b7 [2020-10-22 00:36:09,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d099ca891/410e15d9e59b466396707a1dc38953ee [2020-10-22 00:36:09,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:36:09,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:36:09,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:09,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:36:09,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:36:09,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c422ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09, skipping insertion in model container [2020-10-22 00:36:09,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:36:09,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:36:09,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:09,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:36:09,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:36:09,895 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:36:09,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09 WrapperNode [2020-10-22 00:36:09,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:36:09,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:09,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:36:09,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:36:09,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:36:09,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:36:09,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:36:09,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:36:09,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... [2020-10-22 00:36:09,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:36:09,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:36:09,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:36:09,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:36:09,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:36:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:36:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:36:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:36:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:36:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:36:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:36:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:36:10,058 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:36:10,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:36:10,462 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:36:10,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:10 BoogieIcfgContainer [2020-10-22 00:36:10,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:36:10,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:36:10,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:36:10,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:36:10,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:36:09" (1/3) ... [2020-10-22 00:36:10,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67274a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:10, skipping insertion in model container [2020-10-22 00:36:10,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:36:09" (2/3) ... [2020-10-22 00:36:10,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67274a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:36:10, skipping insertion in model container [2020-10-22 00:36:10,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:36:10" (3/3) ... [2020-10-22 00:36:10,475 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-10-22 00:36:10,486 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:36:10,487 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:36:10,494 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:36:10,495 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:36:10,521 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,525 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,525 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,530 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:36:10,549 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:36:10,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:36:10,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:36:10,584 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:36:10,585 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:36:10,585 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:36:10,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:36:10,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:36:10,585 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:36:10,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:36:10,600 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:36:10,601 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:10,603 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:10,604 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 00:36:10,650 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 00:36:10,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:36:10,655 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 00:36:10,659 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 00:36:12,307 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-22 00:36:12,683 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-22 00:36:12,777 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-22 00:36:12,777 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 00:36:12,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 00:36:12,813 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 00:36:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 00:36:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:36:12,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:12,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:12,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:12,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-22 00:36:12,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:12,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9653564] [2020-10-22 00:36:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9653564] [2020-10-22 00:36:13,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:13,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1161152181] [2020-10-22 00:36:13,107 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,111 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,125 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:36:13,125 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,130 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:13,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:13,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,148 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 00:36:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:13,183 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 00:36:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:13,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 00:36:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:13,201 INFO L225 Difference]: With dead ends: 282 [2020-10-22 00:36:13,201 INFO L226 Difference]: Without dead ends: 218 [2020-10-22 00:36:13,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-22 00:36:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-22 00:36:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 00:36:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-22 00:36:13,271 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-22 00:36:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:13,273 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-22 00:36:13,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-22 00:36:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:36:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:13,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:13,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:36:13,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1794997166, now seen corresponding path program 1 times [2020-10-22 00:36:13,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:13,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285887879] [2020-10-22 00:36:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285887879] [2020-10-22 00:36:13,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:13,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [301084582] [2020-10-22 00:36:13,357 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,358 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,360 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 00:36:13,360 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,382 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:13,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:13,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:13,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:13,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:13,384 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-22 00:36:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:13,418 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-10-22 00:36:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:13,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 00:36:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:13,421 INFO L225 Difference]: With dead ends: 278 [2020-10-22 00:36:13,421 INFO L226 Difference]: Without dead ends: 182 [2020-10-22 00:36:13,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-22 00:36:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-22 00:36:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-22 00:36:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-10-22 00:36:13,438 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-10-22 00:36:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:13,438 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-10-22 00:36:13,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-10-22 00:36:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:36:13,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:13,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:13,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:36:13,441 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:13,441 INFO L82 PathProgramCache]: Analyzing trace with hash -918467642, now seen corresponding path program 1 times [2020-10-22 00:36:13,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:13,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480729670] [2020-10-22 00:36:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480729670] [2020-10-22 00:36:13,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:13,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [988695013] [2020-10-22 00:36:13,527 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,529 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,533 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-22 00:36:13,533 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,558 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:13,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:13,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:13,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:13,560 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-10-22 00:36:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:13,591 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-10-22 00:36:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:36:13,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 00:36:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:13,593 INFO L225 Difference]: With dead ends: 218 [2020-10-22 00:36:13,594 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 00:36:13,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 00:36:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 00:36:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 00:36:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-22 00:36:13,604 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-22 00:36:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:13,605 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-22 00:36:13,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-22 00:36:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 00:36:13,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:13,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:13,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:36:13,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:13,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 1 times [2020-10-22 00:36:13,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:13,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805552609] [2020-10-22 00:36:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805552609] [2020-10-22 00:36:13,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:36:13,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327478728] [2020-10-22 00:36:13,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,652 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,654 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-22 00:36:13,654 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,751 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:13,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:13,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:13,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:13,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,753 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-22 00:36:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:13,760 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-22 00:36:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:13,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 00:36:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:13,762 INFO L225 Difference]: With dead ends: 144 [2020-10-22 00:36:13,762 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 00:36:13,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 00:36:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 00:36:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 00:36:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 00:36:13,773 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-22 00:36:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:13,773 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 00:36:13,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 00:36:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:13,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:13,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:13,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:36:13,776 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:13,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-10-22 00:36:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:13,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020305012] [2020-10-22 00:36:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020305012] [2020-10-22 00:36:13,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:13,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [190896133] [2020-10-22 00:36:13,811 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,812 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,814 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 00:36:13,814 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,833 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:13,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:36:13,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:36:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,834 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 3 states. [2020-10-22 00:36:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:13,843 INFO L93 Difference]: Finished difference Result 176 states and 415 transitions. [2020-10-22 00:36:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:36:13,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 00:36:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:13,845 INFO L225 Difference]: With dead ends: 176 [2020-10-22 00:36:13,846 INFO L226 Difference]: Without dead ends: 152 [2020-10-22 00:36:13,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:36:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-22 00:36:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2020-10-22 00:36:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-22 00:36:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 331 transitions. [2020-10-22 00:36:13,854 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 331 transitions. Word has length 12 [2020-10-22 00:36:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:13,854 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 331 transitions. [2020-10-22 00:36:13,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:36:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 331 transitions. [2020-10-22 00:36:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:36:13,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:13,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:13,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:36:13,857 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-10-22 00:36:13,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:13,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021349633] [2020-10-22 00:36:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:13,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021349633] [2020-10-22 00:36:13,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:13,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:36:13,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415453019] [2020-10-22 00:36:13,949 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:13,951 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:13,957 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-22 00:36:13,957 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:13,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:14,033 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:14,069 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:14,285 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3468#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:36:14,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:36:14,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:36:14,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:36:14,301 INFO L87 Difference]: Start difference. First operand 140 states and 331 transitions. Second operand 5 states. [2020-10-22 00:36:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:14,360 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-22 00:36:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:14,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 00:36:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:14,362 INFO L225 Difference]: With dead ends: 136 [2020-10-22 00:36:14,362 INFO L226 Difference]: Without dead ends: 96 [2020-10-22 00:36:14,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:36:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-22 00:36:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-22 00:36:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 00:36:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 00:36:14,368 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 12 [2020-10-22 00:36:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:14,369 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 00:36:14,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:36:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 00:36:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 00:36:14,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:14,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:14,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:36:14,374 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:14,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-22 00:36:14,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:14,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713427361] [2020-10-22 00:36:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:14,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713427361] [2020-10-22 00:36:14,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:36:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2110759134] [2020-10-22 00:36:14,449 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:14,450 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:14,455 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-10-22 00:36:14,455 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:14,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 00:36:14,607 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3808#(not (= ~__unbuffered_cnt~0 2)), 3809#(not (= ~__unbuffered_cnt~0 1)), 3810#(<= ~__unbuffered_cnt~0 0), 3807#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:36:14,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 00:36:14,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:14,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 00:36:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-22 00:36:14,608 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-22 00:36:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:14,677 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 00:36:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:36:14,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 00:36:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:14,679 INFO L225 Difference]: With dead ends: 92 [2020-10-22 00:36:14,679 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 00:36:14,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-22 00:36:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 00:36:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 00:36:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 00:36:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 00:36:14,683 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 00:36:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:14,683 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 00:36:14,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 00:36:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 00:36:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:36:14,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:36:14,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:36:14,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:36:14,685 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:36:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:36:14,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-22 00:36:14,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:36:14,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386521060] [2020-10-22 00:36:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:36:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:36:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:36:14,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386521060] [2020-10-22 00:36:14,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:36:14,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:36:14,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1306419081] [2020-10-22 00:36:14,718 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:36:14,720 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:36:14,727 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-10-22 00:36:14,728 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:36:14,829 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:36:14,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:36:14,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:36:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:36:14,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:36:14,831 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 00:36:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:36:14,849 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 00:36:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:36:14,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 00:36:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:36:14,850 INFO L225 Difference]: With dead ends: 35 [2020-10-22 00:36:14,850 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:36:14,851 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 [2020-10-22 00:36:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:36:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:36:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:36:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:36:14,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 00:36:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:36:14,852 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:36:14,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:36:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:36:14,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:36:14,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:36:14,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:36:14 BasicIcfg [2020-10-22 00:36:14,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:36:14,858 INFO L168 Benchmark]: Toolchain (without parser) took 5614.39 ms. Allocated memory was 140.0 MB in the beginning and 284.7 MB in the end (delta: 144.7 MB). Free memory was 102.1 MB in the beginning and 172.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,859 INFO L168 Benchmark]: CDTParser took 3.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 158.8 MB in the end (delta: -57.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.46 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,861 INFO L168 Benchmark]: Boogie Preprocessor took 26.21 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,862 INFO L168 Benchmark]: RCFGBuilder took 479.34 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 131.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,863 INFO L168 Benchmark]: TraceAbstraction took 4389.74 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 130.5 MB in the beginning and 172.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:36:14,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 158.8 MB in the end (delta: -57.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.46 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.21 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.34 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 131.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4389.74 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 130.5 MB in the beginning and 172.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 150 SDtfs, 136 SDslu, 180 SDs, 0 SdLazy, 106 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...