/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/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:27:58,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:27:58,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:27:58,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:27:58,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:27:58,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:27:58,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:27:58,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:27:58,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:27:58,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:27:58,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:27:58,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:27:58,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:27:58,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:27:58,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:27:58,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:27:58,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:27:58,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:27:58,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:27:58,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:27:58,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:27:58,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:27:58,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:27:58,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:27:58,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:27:58,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:27:58,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:27:58,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:27:58,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:27:58,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:27:58,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:27:58,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:27:58,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:27:58,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:27:58,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:27:58,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:27:58,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:27:58,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:27:58,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:27:58,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:27:58,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:27:58,925 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 [2020-09-15 23:27:58,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:27:58,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:27:58,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:27:58,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:27:58,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:27:58,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:27:58,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:27:58,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:27:58,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:27:58,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:27:58,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:27:58,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:27:58,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:27:58,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:27:58,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:27:58,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:27:58,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:27:58,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:27:58,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:27:58,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:27:58,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:27:58,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:27:58,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:27:58,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:27:58,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:27:58,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:27:58,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:27:58,960 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:27:58,960 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:27:58,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:27:58,961 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:27:59,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:27:59,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:27:59,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:27:59,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:27:59,441 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:27:59,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-15 23:27:59,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c27012ed/535dc3e0d81a42268514dd8162551ff1/FLAG9228ac686 [2020-09-15 23:28:00,147 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:28:00,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-15 23:28:00,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c27012ed/535dc3e0d81a42268514dd8162551ff1/FLAG9228ac686 [2020-09-15 23:28:00,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c27012ed/535dc3e0d81a42268514dd8162551ff1 [2020-09-15 23:28:00,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:28:00,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:28:00,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:28:00,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:28:00,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:28:00,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:28:00" (1/1) ... [2020-09-15 23:28:00,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d51a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:00, skipping insertion in model container [2020-09-15 23:28:00,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:28:00" (1/1) ... [2020-09-15 23:28:00,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:28:00,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:28:01,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:28:01,046 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:28:01,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:28:01,177 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:28:01,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01 WrapperNode [2020-09-15 23:28:01,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:28:01,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:28:01,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:28:01,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:28:01,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:28:01,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:28:01,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:28:01,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:28:01,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (1/1) ... [2020-09-15 23:28:01,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:28:01,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:28:01,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:28:01,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:28:01,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (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 [2020-09-15 23:28:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:28:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:28:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:28:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:28:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:28:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:28:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:28:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:28:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:28:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:28:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:28:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:28:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:28:01,361 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:28:01,702 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:28:01,702 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:28:01,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:28:01 BoogieIcfgContainer [2020-09-15 23:28:01,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:28:01,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:28:01,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:28:01,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:28:01,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:28:00" (1/3) ... [2020-09-15 23:28:01,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7d36dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:28:01, skipping insertion in model container [2020-09-15 23:28:01,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:28:01" (2/3) ... [2020-09-15 23:28:01,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7d36dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:28:01, skipping insertion in model container [2020-09-15 23:28:01,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:28:01" (3/3) ... [2020-09-15 23:28:01,717 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-09-15 23:28:01,728 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:28:01,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:28:01,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:28:01,739 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:28:01,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,772 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,772 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,776 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,776 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,782 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,782 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:28:01,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:28:01,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:28:01,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:28:01,851 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:28:01,851 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:28:01,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:28:01,851 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:28:01,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:28:01,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:28:01,870 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-15 23:28:01,873 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-15 23:28:01,924 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-15 23:28:01,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:28:01,932 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:28:01,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-15 23:28:01,959 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-15 23:28:01,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:28:01,961 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:28:01,963 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:28:01,964 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:28:03,547 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-09-15 23:28:03,547 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-15 23:28:03,554 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-15 23:28:03,583 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 23:28:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 23:28:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:28:03,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:03,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:03,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:03,601 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-09-15 23:28:03,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:03,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5872614] [2020-09-15 23:28:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:03,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5872614] [2020-09-15 23:28:03,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:03,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:28:03,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2117435695] [2020-09-15 23:28:03,882 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:03,886 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:03,900 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:28:03,900 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:03,902 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:03,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:28:03,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:28:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:03,924 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 23:28:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:03,969 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-15 23:28:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:28:03,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:28:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:03,991 INFO L225 Difference]: With dead ends: 290 [2020-09-15 23:28:03,992 INFO L226 Difference]: Without dead ends: 226 [2020-09-15 23:28:03,993 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 [2020-09-15 23:28:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-15 23:28:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-15 23:28:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-15 23:28:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-15 23:28:04,062 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-15 23:28:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:04,063 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-15 23:28:04,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:28:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-15 23:28:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:28:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:04,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:04,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:28:04,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-09-15 23:28:04,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:04,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391463941] [2020-09-15 23:28:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:04,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391463941] [2020-09-15 23:28:04,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:04,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:28:04,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1168197049] [2020-09-15 23:28:04,146 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:04,147 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:04,149 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-15 23:28:04,149 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:04,192 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:04,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:28:04,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:04,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:28:04,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:04,194 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-15 23:28:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:04,211 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-09-15 23:28:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:28:04,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-15 23:28:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:04,214 INFO L225 Difference]: With dead ends: 212 [2020-09-15 23:28:04,215 INFO L226 Difference]: Without dead ends: 212 [2020-09-15 23:28:04,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-15 23:28:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-15 23:28:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-15 23:28:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-09-15 23:28:04,239 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-09-15 23:28:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:04,239 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-09-15 23:28:04,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:28:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-09-15 23:28:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:28:04,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:04,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:04,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:28:04,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash 560175129, now seen corresponding path program 1 times [2020-09-15 23:28:04,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:04,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244573315] [2020-09-15 23:28:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:04,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244573315] [2020-09-15 23:28:04,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:04,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:28:04,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [285710702] [2020-09-15 23:28:04,374 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:04,375 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:04,377 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-15 23:28:04,377 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:04,412 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:04,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:28:04,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:04,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:28:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:28:04,414 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-09-15 23:28:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:04,437 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-15 23:28:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:28:04,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 23:28:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:04,440 INFO L225 Difference]: With dead ends: 242 [2020-09-15 23:28:04,440 INFO L226 Difference]: Without dead ends: 146 [2020-09-15 23:28:04,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:28:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-15 23:28:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-15 23:28:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-15 23:28:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-15 23:28:04,453 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-09-15 23:28:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:04,454 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-15 23:28:04,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:28:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-15 23:28:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:28:04,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:04,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:04,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:28:04,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:04,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480203, now seen corresponding path program 1 times [2020-09-15 23:28:04,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:04,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060867356] [2020-09-15 23:28:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:04,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060867356] [2020-09-15 23:28:04,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:04,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:28:04,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1564501473] [2020-09-15 23:28:04,550 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:04,552 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:04,554 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-15 23:28:04,554 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:04,585 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:04,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:28:04,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:28:04,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:04,586 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-15 23:28:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:04,595 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-09-15 23:28:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:28:04,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 23:28:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:04,597 INFO L225 Difference]: With dead ends: 144 [2020-09-15 23:28:04,597 INFO L226 Difference]: Without dead ends: 144 [2020-09-15 23:28:04,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-15 23:28:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-15 23:28:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-15 23:28:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-15 23:28:04,608 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-09-15 23:28:04,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:04,608 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-15 23:28:04,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:28:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-15 23:28:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:28:04,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:04,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:04,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:28:04,611 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:04,611 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-09-15 23:28:04,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:04,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650899236] [2020-09-15 23:28:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:04,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650899236] [2020-09-15 23:28:04,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:04,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:28:04,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [894677280] [2020-09-15 23:28:04,731 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:04,733 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:04,737 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-15 23:28:04,738 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:04,767 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,796 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,821 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,863 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,906 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:04,971 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3039#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:28:04,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:28:04,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:04,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:28:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:28:04,973 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-09-15 23:28:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:05,037 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-09-15 23:28:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:28:05,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-15 23:28:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:05,038 INFO L225 Difference]: With dead ends: 137 [2020-09-15 23:28:05,039 INFO L226 Difference]: Without dead ends: 97 [2020-09-15 23:28:05,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:28:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-15 23:28:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-15 23:28:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-15 23:28:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-09-15 23:28:05,045 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-09-15 23:28:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:05,045 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-09-15 23:28:05,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:28:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-09-15 23:28:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:28:05,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:05,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:05,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:28:05,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:05,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-09-15 23:28:05,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:05,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192950509] [2020-09-15 23:28:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:05,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192950509] [2020-09-15 23:28:05,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:05,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:28:05,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894495380] [2020-09-15 23:28:05,095 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:05,096 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:05,099 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-15 23:28:05,099 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:05,104 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:05,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:28:05,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:05,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:28:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:05,106 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-09-15 23:28:05,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:05,117 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-09-15 23:28:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:28:05,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-15 23:28:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:05,118 INFO L225 Difference]: With dead ends: 115 [2020-09-15 23:28:05,118 INFO L226 Difference]: Without dead ends: 98 [2020-09-15 23:28:05,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-15 23:28:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-09-15 23:28:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-15 23:28:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-09-15 23:28:05,127 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-09-15 23:28:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:05,128 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-09-15 23:28:05,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:28:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-09-15 23:28:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:28:05,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:05,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:05,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:28:05,129 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:05,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:05,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-09-15 23:28:05,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:05,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182133160] [2020-09-15 23:28:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:05,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182133160] [2020-09-15 23:28:05,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:05,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:28:05,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [456920496] [2020-09-15 23:28:05,223 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:05,224 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:05,231 INFO L274 McrAutomatonBuilder]: Finished intersection with 57 states and 100 transitions. [2020-09-15 23:28:05,232 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:05,242 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:28:05,317 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:05,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 23:28:05,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:05,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 23:28:05,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 23:28:05,318 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-09-15 23:28:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:05,383 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-09-15 23:28:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:28:05,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-15 23:28:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:05,384 INFO L225 Difference]: With dead ends: 92 [2020-09-15 23:28:05,384 INFO L226 Difference]: Without dead ends: 36 [2020-09-15 23:28:05,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:28:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-15 23:28:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-15 23:28:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-15 23:28:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-15 23:28:05,387 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-15 23:28:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:05,387 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-15 23:28:05,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 23:28:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-15 23:28:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:28:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:28:05,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:28:05,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:28:05,388 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:28:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:28:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 1 times [2020-09-15 23:28:05,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:28:05,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69797919] [2020-09-15 23:28:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:28:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:28:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:28:05,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69797919] [2020-09-15 23:28:05,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:28:05,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:28:05,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [511023765] [2020-09-15 23:28:05,431 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:28:05,433 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:28:05,442 INFO L274 McrAutomatonBuilder]: Finished intersection with 62 states and 114 transitions. [2020-09-15 23:28:05,442 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:28:05,450 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:28:05,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:28:05,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:28:05,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:28:05,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:05,452 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-15 23:28:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:28:05,457 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-15 23:28:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:28:05,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-15 23:28:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:28:05,458 INFO L225 Difference]: With dead ends: 35 [2020-09-15 23:28:05,458 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:28:05,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:28:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:28:05,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:28:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:28:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:28:05,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 23:28:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:28:05,460 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:28:05,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:28:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:28:05,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:28:05,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:28:05,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:28:05 BasicIcfg [2020-09-15 23:28:05,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:28:05,469 INFO L168 Benchmark]: Toolchain (without parser) took 5089.11 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 101.8 MB in the beginning and 111.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,470 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:28:05,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.80 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,472 INFO L168 Benchmark]: Boogie Preprocessor took 30.79 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,473 INFO L168 Benchmark]: RCFGBuilder took 435.65 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 135.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,474 INFO L168 Benchmark]: TraceAbstraction took 3756.71 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 134.8 MB in the beginning and 111.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2020-09-15 23:28:05,478 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 146.8 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.80 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.79 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.65 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 135.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3756.71 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 134.8 MB in the beginning and 111.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2287 CheckedPairsTotal, 56 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 142 SDtfs, 87 SDslu, 152 SDs, 0 SdLazy, 80 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...