/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/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:04:43,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:04:43,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:04:43,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:04:43,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:04:43,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:04:43,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:04:43,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:04:43,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:04:43,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:04:43,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:04:43,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:04:43,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:04:43,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:04:43,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:04:43,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:04:43,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:04:43,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:04:43,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:04:43,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:04:43,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:04:43,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:04:43,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:04:43,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:04:43,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:04:43,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:04:43,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:04:43,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:04:43,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:04:43,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:04:43,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:04:43,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:04:43,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:04:43,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:04:43,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:04:43,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:04:43,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:04:43,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:04:43,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:04:43,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:04:43,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:04:43,926 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 [2020-10-06 01:04:43,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:04:43,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:04:43,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:04:43,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:04:43,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:04:43,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:04:43,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:04:43,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:04:43,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:04:43,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:04:43,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:04:43,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:04:43,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:04:43,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:04:43,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:04:43,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:04:43,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:04:43,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:04:43,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:04:43,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:04:43,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:04:43,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:04:43,957 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:04:43,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:04:43,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:04:43,957 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:04:44,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:04:44,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:04:44,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:04:44,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:04:44,277 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:04:44,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-06 01:04:44,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a3ca3ed/aad824c41d7e4999bcc9d11c1a841a52/FLAGdce2f2388 [2020-10-06 01:04:44,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:04:44,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-06 01:04:44,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a3ca3ed/aad824c41d7e4999bcc9d11c1a841a52/FLAGdce2f2388 [2020-10-06 01:04:45,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a3ca3ed/aad824c41d7e4999bcc9d11c1a841a52 [2020-10-06 01:04:45,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:04:45,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:04:45,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:04:45,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:04:45,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:04:45,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c932ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45, skipping insertion in model container [2020-10-06 01:04:45,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:04:45,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:04:45,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:04:45,669 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:04:45,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:04:45,804 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:04:45,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45 WrapperNode [2020-10-06 01:04:45,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:04:45,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:04:45,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:04:45,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:04:45,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:04:45,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:04:45,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:04:45,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:04:45,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (1/1) ... [2020-10-06 01:04:45,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:04:45,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:04:45,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:04:45,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:04:45,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (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 [2020-10-06 01:04:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:04:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:04:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:04:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:04:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:04:45,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:04:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:04:45,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:04:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:04:45,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:04:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:04:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:04:45,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:04:45,964 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:04:46,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:04:46,287 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:04:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:04:46 BoogieIcfgContainer [2020-10-06 01:04:46,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:04:46,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:04:46,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:04:46,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:04:46,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:04:45" (1/3) ... [2020-10-06 01:04:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc3ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:04:46, skipping insertion in model container [2020-10-06 01:04:46,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:45" (2/3) ... [2020-10-06 01:04:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc3ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:04:46, skipping insertion in model container [2020-10-06 01:04:46,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:04:46" (3/3) ... [2020-10-06 01:04:46,297 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-10-06 01:04:46,307 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:04:46,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:04:46,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:04:46,316 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:04:46,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,349 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,364 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,367 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:46,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:04:46,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:04:46,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:04:46,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:04:46,405 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:04:46,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:04:46,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:04:46,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:04:46,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:04:46,420 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-10-06 01:04:46,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-06 01:04:46,466 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-06 01:04:46,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:04:46,471 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-06 01:04:46,474 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-06 01:04:46,494 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-06 01:04:46,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:04:46,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-06 01:04:46,500 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-10-06 01:04:46,501 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:04:47,869 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-10-06 01:04:47,870 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-10-06 01:04:47,874 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-06 01:04:47,894 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-06 01:04:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-06 01:04:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:04:47,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:47,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:47,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-10-06 01:04:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:47,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569054730] [2020-10-06 01:04:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:48,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569054730] [2020-10-06 01:04:48,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:48,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:04:48,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [981173758] [2020-10-06 01:04:48,165 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:48,170 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:48,187 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:04:48,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:48,194 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:48,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:04:48,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:04:48,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:04:48,213 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-06 01:04:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:48,259 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-06 01:04:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:04:48,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:04:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:48,283 INFO L225 Difference]: With dead ends: 220 [2020-10-06 01:04:48,283 INFO L226 Difference]: Without dead ends: 172 [2020-10-06 01:04:48,285 INFO L675 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 [2020-10-06 01:04:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-06 01:04:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-06 01:04:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-06 01:04:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-06 01:04:48,346 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-06 01:04:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:48,347 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-06 01:04:48,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:04:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-06 01:04:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:04:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:48,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:48,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:04:48,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-10-06 01:04:48,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:48,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631055808] [2020-10-06 01:04:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:48,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631055808] [2020-10-06 01:04:48,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:48,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:04:48,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1856337252] [2020-10-06 01:04:48,415 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:48,416 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:48,419 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:04:48,419 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:48,472 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:48,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:04:48,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:04:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:04:48,474 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-06 01:04:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:48,482 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-06 01:04:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:04:48,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:04:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:48,485 INFO L225 Difference]: With dead ends: 163 [2020-10-06 01:04:48,485 INFO L226 Difference]: Without dead ends: 163 [2020-10-06 01:04:48,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:04:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-06 01:04:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-06 01:04:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-06 01:04:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-06 01:04:48,504 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-06 01:04:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:48,505 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-06 01:04:48,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:04:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-06 01:04:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:04:48,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:48,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:48,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:04:48,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -650627585, now seen corresponding path program 1 times [2020-10-06 01:04:48,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:48,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742187362] [2020-10-06 01:04:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:48,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742187362] [2020-10-06 01:04:48,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:48,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:48,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148275997] [2020-10-06 01:04:48,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:48,589 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:48,591 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-06 01:04:48,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:48,642 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:48,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:48,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:48,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:48,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:48,643 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 4 states. [2020-10-06 01:04:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:48,665 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-10-06 01:04:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:04:48,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 01:04:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:48,667 INFO L225 Difference]: With dead ends: 218 [2020-10-06 01:04:48,667 INFO L226 Difference]: Without dead ends: 146 [2020-10-06 01:04:48,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-06 01:04:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-06 01:04:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-06 01:04:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-06 01:04:48,680 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-10-06 01:04:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:48,681 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-06 01:04:48,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-06 01:04:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:04:48,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:48,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:48,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:04:48,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-10-06 01:04:48,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:48,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372420198] [2020-10-06 01:04:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:48,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372420198] [2020-10-06 01:04:48,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:48,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:48,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [456865529] [2020-10-06 01:04:48,763 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:48,765 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:48,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-10-06 01:04:48,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:48,799 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:48,836 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:48,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:48,882 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:48,899 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:48,917 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:48,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:48,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:48,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:48,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:48,919 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-10-06 01:04:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:48,948 INFO L93 Difference]: Finished difference Result 118 states and 288 transitions. [2020-10-06 01:04:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:48,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:04:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:48,949 INFO L225 Difference]: With dead ends: 118 [2020-10-06 01:04:48,949 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:04:48,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:04:48,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:04:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:04:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:04:48,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-06 01:04:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:48,951 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:04:48,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:04:48,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:04:48,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:04:48,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:04:48 BasicIcfg [2020-10-06 01:04:48,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:04:48,958 INFO L168 Benchmark]: Toolchain (without parser) took 3780.46 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 100.8 MB in the beginning and 120.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,959 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.10 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 158.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,962 INFO L168 Benchmark]: Boogie Preprocessor took 38.22 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,963 INFO L168 Benchmark]: RCFGBuilder took 384.95 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,964 INFO L168 Benchmark]: TraceAbstraction took 2665.29 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.6 MB in the beginning and 120.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:48,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.10 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 158.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.22 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.95 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2665.29 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.6 MB in the beginning and 120.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 63 SDtfs, 41 SDslu, 62 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...