/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:08:17,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:08:17,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:08:17,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:08:17,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:08:17,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:08:17,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:08:17,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:08:17,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:08:17,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:08:17,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:08:17,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:08:17,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:08:17,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:08:17,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:08:17,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:08:17,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:08:17,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:08:17,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:08:17,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:08:17,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:08:17,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:08:17,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:08:17,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:08:17,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:08:17,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:08:17,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:08:17,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:08:17,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:08:17,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:08:17,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:08:17,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:08:17,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:08:17,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:08:17,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:08:17,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:08:17,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:08:17,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:08:17,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:08:17,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:08:17,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:08:17,912 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.epf [2020-10-16 12:08:17,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:08:17,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:08:17,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:08:17,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:08:17,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:08:17,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:08:17,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:08:17,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:08:17,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:08:17,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:08:17,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:08:17,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:08:17,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:08:17,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:08:17,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:08:17,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:08:17,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:08:17,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:08:17,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:08:17,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:08:17,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:08:17,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:08:17,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:08:17,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:08:17,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:08:17,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:08:17,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:08:17,941 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:08:17,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:08:18,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:08:18,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:08:18,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:08:18,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:08:18,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:08:18,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 12:08:18,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcedc34f/97d6bff6259c4562bcc0af7c4474c488/FLAG57070a0a5 [2020-10-16 12:08:18,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:08:18,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 12:08:18,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcedc34f/97d6bff6259c4562bcc0af7c4474c488/FLAG57070a0a5 [2020-10-16 12:08:19,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffcedc34f/97d6bff6259c4562bcc0af7c4474c488 [2020-10-16 12:08:19,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:08:19,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:08:19,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:08:19,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:08:19,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:08:19,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529da74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19, skipping insertion in model container [2020-10-16 12:08:19,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:08:19,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:08:19,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:08:19,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:08:19,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:08:19,776 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:08:19,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19 WrapperNode [2020-10-16 12:08:19,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:08:19,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:19,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:08:19,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:08:19,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:19,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:08:19,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:08:19,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:08:19,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... [2020-10-16 12:08:19,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:08:19,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:08:19,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:08:19,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:08:19,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:08:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:08:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:08:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:08:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:08:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:08:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:08:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:08:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:08:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:08:19,924 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:08:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:08:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:08:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:08:19,927 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:08:20,313 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:08:20,313 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:08:20,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:20 BoogieIcfgContainer [2020-10-16 12:08:20,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:08:20,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:08:20,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:08:20,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:08:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:08:19" (1/3) ... [2020-10-16 12:08:20,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35798344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:20, skipping insertion in model container [2020-10-16 12:08:20,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:19" (2/3) ... [2020-10-16 12:08:20,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35798344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:20, skipping insertion in model container [2020-10-16 12:08:20,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:20" (3/3) ... [2020-10-16 12:08:20,324 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-10-16 12:08:20,336 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:08:20,336 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:08:20,344 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:08:20,345 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:08:20,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,374 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,378 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,378 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,384 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:20,412 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:08:20,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:08:20,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:08:20,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:08:20,441 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:08:20,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:08:20,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:08:20,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:08:20,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:08:20,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:08:20,453 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:08:20,454 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:20,456 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:20,458 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:20,496 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 12:08:20,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:08:20,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:08:20,504 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:08:21,745 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 12:08:21,746 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 12:08:21,753 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 12:08:21,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 12:08:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 12:08:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:08:21,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:21,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:21,819 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:21,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 12:08:21,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:21,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698674232] [2020-10-16 12:08:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698674232] [2020-10-16 12:08:22,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:22,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662378010] [2020-10-16 12:08:22,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:08:22,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:08:22,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:08:22,040 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 12:08:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,076 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 12:08:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:08:22,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 12:08:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,095 INFO L225 Difference]: With dead ends: 362 [2020-10-16 12:08:22,095 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 12:08:22,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:08:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 12:08:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 12:08:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 12:08:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 12:08:22,173 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 12:08:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,175 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 12:08:22,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:08:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 12:08:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:08:22,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:08:22,177 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 12:08:22,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776672844] [2020-10-16 12:08:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776672844] [2020-10-16 12:08:22,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:22,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868357327] [2020-10-16 12:08:22,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:22,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:22,311 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 12:08:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,347 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-16 12:08:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:22,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:08:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,351 INFO L225 Difference]: With dead ends: 346 [2020-10-16 12:08:22,351 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 12:08:22,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 12:08:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 12:08:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 12:08:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-16 12:08:22,378 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-16 12:08:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,378 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-16 12:08:22,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-16 12:08:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:08:22,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:08:22,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,383 INFO L82 PathProgramCache]: Analyzing trace with hash -397112394, now seen corresponding path program 1 times [2020-10-16 12:08:22,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935648164] [2020-10-16 12:08:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935648164] [2020-10-16 12:08:22,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:22,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004963383] [2020-10-16 12:08:22,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:22,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:22,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:22,507 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-16 12:08:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,536 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-10-16 12:08:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:22,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:08:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,539 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:08:22,539 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 12:08:22,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 12:08:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 12:08:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 12:08:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-10-16 12:08:22,555 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-10-16 12:08:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,556 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-10-16 12:08:22,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-10-16 12:08:22,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:08:22,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:08:22,558 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-10-16 12:08:22,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691263366] [2020-10-16 12:08:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691263366] [2020-10-16 12:08:22,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:22,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961740548] [2020-10-16 12:08:22,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:08:22,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:08:22,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,619 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-10-16 12:08:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,669 INFO L93 Difference]: Finished difference Result 320 states and 860 transitions. [2020-10-16 12:08:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:08:22,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 12:08:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,671 INFO L225 Difference]: With dead ends: 320 [2020-10-16 12:08:22,671 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 12:08:22,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:08:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 12:08:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-16 12:08:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:08:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-10-16 12:08:22,679 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 11 [2020-10-16 12:08:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,680 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-10-16 12:08:22,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:08:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-10-16 12:08:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:08:22,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:08:22,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,682 INFO L82 PathProgramCache]: Analyzing trace with hash 625195173, now seen corresponding path program 1 times [2020-10-16 12:08:22,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258015329] [2020-10-16 12:08:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258015329] [2020-10-16 12:08:22,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:22,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251979661] [2020-10-16 12:08:22,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:22,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:22,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:22,746 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-10-16 12:08:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,764 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-10-16 12:08:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:22,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:08:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,766 INFO L225 Difference]: With dead ends: 170 [2020-10-16 12:08:22,766 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 12:08:22,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 12:08:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 12:08:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 12:08:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-16 12:08:22,773 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-16 12:08:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,773 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-16 12:08:22,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-16 12:08:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:08:22,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:08:22,775 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-10-16 12:08:22,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048019573] [2020-10-16 12:08:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048019573] [2020-10-16 12:08:22,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:22,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313132794] [2020-10-16 12:08:22,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:08:22,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:08:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,833 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 5 states. [2020-10-16 12:08:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,875 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-10-16 12:08:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:08:22,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:08:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,877 INFO L225 Difference]: With dead ends: 176 [2020-10-16 12:08:22,877 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 12:08:22,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:08:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 12:08:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-16 12:08:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:08:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-10-16 12:08:22,881 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-10-16 12:08:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,881 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-10-16 12:08:22,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:08:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-10-16 12:08:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:08:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:08:22,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-10-16 12:08:22,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690626441] [2020-10-16 12:08:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:22,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690626441] [2020-10-16 12:08:22,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:22,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:22,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688270374] [2020-10-16 12:08:22,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:22,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:22,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:22,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:22,926 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 4 states. [2020-10-16 12:08:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:22,953 INFO L93 Difference]: Finished difference Result 109 states and 223 transitions. [2020-10-16 12:08:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:22,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 12:08:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:22,954 INFO L225 Difference]: With dead ends: 109 [2020-10-16 12:08:22,955 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:08:22,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:08:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-16 12:08:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:08:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2020-10-16 12:08:22,958 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 14 [2020-10-16 12:08:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:22,959 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2020-10-16 12:08:22,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2020-10-16 12:08:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:08:22,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:22,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:22,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:08:22,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:22,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-10-16 12:08:22,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:22,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816483503] [2020-10-16 12:08:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:23,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816483503] [2020-10-16 12:08:23,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:23,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:08:23,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319607454] [2020-10-16 12:08:23,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:08:23,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:08:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:23,005 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand 5 states. [2020-10-16 12:08:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:23,041 INFO L93 Difference]: Finished difference Result 83 states and 155 transitions. [2020-10-16 12:08:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:08:23,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 12:08:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:23,042 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:08:23,042 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 12:08:23,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:08:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 12:08:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 12:08:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 12:08:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-10-16 12:08:23,059 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 15 [2020-10-16 12:08:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:23,059 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-10-16 12:08:23,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:08:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-10-16 12:08:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:08:23,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:23,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:23,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:08:23,064 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-10-16 12:08:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:23,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191514206] [2020-10-16 12:08:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:23,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191514206] [2020-10-16 12:08:23,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:23,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:08:23,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826152735] [2020-10-16 12:08:23,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:08:23,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:23,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:08:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:08:23,163 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 6 states. [2020-10-16 12:08:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:23,229 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-10-16 12:08:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:08:23,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-16 12:08:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:23,231 INFO L225 Difference]: With dead ends: 61 [2020-10-16 12:08:23,231 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 12:08:23,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:08:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 12:08:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 12:08:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:08:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 12:08:23,237 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-16 12:08:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:23,238 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 12:08:23,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:08:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 12:08:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:08:23,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:23,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:23,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:08:23,240 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:23,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-10-16 12:08:23,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:23,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479380048] [2020-10-16 12:08:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:23,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479380048] [2020-10-16 12:08:23,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:23,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:23,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493102307] [2020-10-16 12:08:23,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:23,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:23,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:23,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:23,332 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-10-16 12:08:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:23,349 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 12:08:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:08:23,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 12:08:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:23,349 INFO L225 Difference]: With dead ends: 54 [2020-10-16 12:08:23,349 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:08:23,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:08:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:08:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:08:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:08:23,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 12:08:23,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:23,352 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:08:23,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:08:23,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:08:23,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:08:23,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:08:23 BasicIcfg [2020-10-16 12:08:23,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:08:23,364 INFO L168 Benchmark]: Toolchain (without parser) took 4236.28 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.3 MB in the beginning and 187.0 MB in the end (delta: -84.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,365 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.26 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 161.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.75 ms. Allocated memory is still 203.4 MB. Free memory was 161.7 MB in the beginning and 159.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,375 INFO L168 Benchmark]: Boogie Preprocessor took 25.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 158.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,376 INFO L168 Benchmark]: RCFGBuilder took 466.21 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 136.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:23,379 INFO L168 Benchmark]: TraceAbstraction took 3043.39 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 135.4 MB in the beginning and 187.0 MB in the end (delta: -51.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:08:23,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.26 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 161.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.75 ms. Allocated memory is still 203.4 MB. Free memory was 161.7 MB in the beginning and 159.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 158.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.21 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 136.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3043.39 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 135.4 MB in the beginning and 187.0 MB in the end (delta: -51.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 643 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 211 SDtfs, 194 SDslu, 305 SDs, 0 SdLazy, 123 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3791 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...