/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/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:13:38,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:13:38,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:13:38,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:13:38,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:13:38,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:13:38,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:13:38,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:13:38,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:13:38,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:13:38,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:13:38,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:13:38,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:13:38,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:13:38,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:13:38,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:13:38,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:13:38,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:13:38,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:13:38,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:13:38,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:13:38,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:13:38,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:13:38,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:13:38,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 00:13:38,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 00:13:38,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 00:13:38,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 00:13:38,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 00:13:38,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 00:13:38,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:13:38,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:13:38,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:13:38,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:13:38,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:13:38,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:13:38,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:13:38,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:13:38,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:13:38,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:13:38,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:13:38,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 00:13:38,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:13:38,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:13:38,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:13:38,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:13:38,949 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:13:38,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:13:38,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:13:38,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:13:38,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:13:38,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:13:38,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:13:38,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:13:38,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:13:38,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:13:38,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:13:38,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:13:38,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:13:38,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:13:38,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:13:38,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:13:38,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:13:38,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:13:38,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:13:38,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:13:38,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:13:38,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:13:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:13:38,958 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:13:38,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:13:38,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:13:38,958 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:13:39,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:13:39,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:13:39,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:13:39,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:13:39,472 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:13:39,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-09-16 00:13:39,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b1e57a3/c05103355aa54a35a43dd24016d509df/FLAGadd88bd4d [2020-09-16 00:13:40,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:13:40,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-09-16 00:13:40,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b1e57a3/c05103355aa54a35a43dd24016d509df/FLAGadd88bd4d [2020-09-16 00:13:40,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b1e57a3/c05103355aa54a35a43dd24016d509df [2020-09-16 00:13:40,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:13:40,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:13:40,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:13:40,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:13:40,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:13:40,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:13:40" (1/1) ... [2020-09-16 00:13:40,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0f7ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:40, skipping insertion in model container [2020-09-16 00:13:40,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:13:40" (1/1) ... [2020-09-16 00:13:40,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:13:40,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:13:41,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:13:41,070 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:13:41,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:13:41,241 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:13:41,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41 WrapperNode [2020-09-16 00:13:41,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:13:41,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:13:41,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:13:41,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:13:41,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:13:41,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:13:41,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:13:41,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:13:41,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... [2020-09-16 00:13:41,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:13:41,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:13:41,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:13:41,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:13:41,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:13:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:13:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:13:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:13:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:13:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:13:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:13:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:13:41,449 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:13:41,819 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:13:41,820 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:13:41,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:13:41 BoogieIcfgContainer [2020-09-16 00:13:41,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:13:41,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:13:41,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:13:41,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:13:41,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:13:40" (1/3) ... [2020-09-16 00:13:41,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8d836b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:13:41, skipping insertion in model container [2020-09-16 00:13:41,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:13:41" (2/3) ... [2020-09-16 00:13:41,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8d836b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:13:41, skipping insertion in model container [2020-09-16 00:13:41,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:13:41" (3/3) ... [2020-09-16 00:13:41,837 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-09-16 00:13:41,849 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:13:41,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:13:41,858 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:13:41,859 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:13:41,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:13:41,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 00:13:41,956 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:13:41,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:13:41,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:13:41,957 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:13:41,957 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:13:41,957 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:13:41,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:13:41,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:13:41,976 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-09-16 00:13:41,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 00:13:42,027 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 00:13:42,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:13:42,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 00:13:42,036 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 00:13:42,063 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 00:13:42,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:13:42,064 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 00:13:42,066 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-16 00:13:42,071 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:13:43,315 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-09-16 00:13:43,315 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-09-16 00:13:43,321 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-16 00:13:43,339 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-16 00:13:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-16 00:13:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 00:13:43,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:13:43,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 00:13:43,352 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:13:43,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:13:43,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-09-16 00:13:43,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:13:43,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601972748] [2020-09-16 00:13:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:13:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:13:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:13:43,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601972748] [2020-09-16 00:13:43,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:13:43,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:13:43,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1506071146] [2020-09-16 00:13:43,670 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:13:43,674 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:13:43,691 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-16 00:13:43,691 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:13:43,694 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:13:43,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:13:43,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:13:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:13:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:13:43,722 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-16 00:13:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:13:43,760 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-09-16 00:13:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:13:43,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-16 00:13:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:13:43,794 INFO L225 Difference]: With dead ends: 70 [2020-09-16 00:13:43,795 INFO L226 Difference]: Without dead ends: 54 [2020-09-16 00:13:43,797 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 [2020-09-16 00:13:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-16 00:13:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-16 00:13:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-16 00:13:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-09-16 00:13:43,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-09-16 00:13:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:13:43,853 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-09-16 00:13:43,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:13:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-09-16 00:13:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 00:13:43,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:13:43,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:13:43,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:13:43,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:13:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:13:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-09-16 00:13:43,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:13:43,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942431329] [2020-09-16 00:13:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:13:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:13:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:13:43,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942431329] [2020-09-16 00:13:43,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:13:43,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:13:43,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321079260] [2020-09-16 00:13:43,953 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:13:43,954 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:13:43,956 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-09-16 00:13:43,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:13:43,974 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:13:43,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:13:43,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:13:43,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:13:43,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:13:43,978 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-09-16 00:13:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:13:44,011 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-16 00:13:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:13:44,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-16 00:13:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:13:44,013 INFO L225 Difference]: With dead ends: 60 [2020-09-16 00:13:44,013 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 00:13:44,014 INFO L675 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 [2020-09-16 00:13:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 00:13:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 00:13:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 00:13:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-16 00:13:44,020 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-09-16 00:13:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:13:44,021 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-16 00:13:44,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:13:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-16 00:13:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:13:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:13:44,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:13:44,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:13:44,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:13:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:13:44,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-09-16 00:13:44,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:13:44,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528537421] [2020-09-16 00:13:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:13:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:13:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:13:44,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528537421] [2020-09-16 00:13:44,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:13:44,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:13:44,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1341979090] [2020-09-16 00:13:44,136 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:13:44,137 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:13:44,141 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-16 00:13:44,141 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:13:44,171 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:13:44,207 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:13:44,230 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:13:44,260 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [535#(not (= 2 ~__unbuffered_cnt~0))] [2020-09-16 00:13:44,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:13:44,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:13:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:13:44,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:13:44,262 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 5 states. [2020-09-16 00:13:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:13:44,315 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-09-16 00:13:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:13:44,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 00:13:44,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:13:44,316 INFO L225 Difference]: With dead ends: 32 [2020-09-16 00:13:44,316 INFO L226 Difference]: Without dead ends: 22 [2020-09-16 00:13:44,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:13:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-16 00:13:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-16 00:13:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-16 00:13:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-16 00:13:44,320 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2020-09-16 00:13:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:13:44,321 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-16 00:13:44,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:13:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-16 00:13:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:13:44,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:13:44,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:13:44,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:13:44,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:13:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:13:44,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-09-16 00:13:44,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:13:44,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025282379] [2020-09-16 00:13:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:13:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:13:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:13:44,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025282379] [2020-09-16 00:13:44,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:13:44,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:13:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [153656407] [2020-09-16 00:13:44,388 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:13:44,389 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:13:44,392 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 00:13:44,392 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:13:44,433 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:13:44,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:13:44,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:13:44,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:13:44,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:13:44,434 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-09-16 00:13:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:13:44,446 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-16 00:13:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:13:44,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 00:13:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:13:44,447 INFO L225 Difference]: With dead ends: 21 [2020-09-16 00:13:44,447 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:13:44,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:13:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:13:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:13:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:13:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:13:44,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-16 00:13:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:13:44,449 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:13:44,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:13:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:13:44,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:13:44,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:13:44,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:13:44 BasicIcfg [2020-09-16 00:13:44,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:13:44,459 INFO L168 Benchmark]: Toolchain (without parser) took 3980.77 ms. Allocated memory was 143.7 MB in the beginning and 255.3 MB in the end (delta: 111.7 MB). Free memory was 98.3 MB in the beginning and 168.0 MB in the end (delta: -69.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,459 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:13:44,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.57 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 97.7 MB in the beginning and 157.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.33 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,462 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 153.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,463 INFO L168 Benchmark]: RCFGBuilder took 459.11 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 133.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,464 INFO L168 Benchmark]: TraceAbstraction took 2627.66 ms. Allocated memory was 200.3 MB in the beginning and 255.3 MB in the end (delta: 55.1 MB). Free memory was 132.8 MB in the beginning and 168.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-16 00:13:44,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.57 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 97.7 MB in the beginning and 157.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 91.33 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 153.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.11 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 133.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2627.66 ms. Allocated memory was 200.3 MB in the beginning and 255.3 MB in the end (delta: 55.1 MB). Free memory was 132.8 MB in the beginning and 168.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 350 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 49 SDtfs, 32 SDslu, 45 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 778 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...