/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:59:40,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:59:40,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:59:40,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:59:40,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:59:40,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:59:40,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:59:40,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:59:40,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:59:40,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:59:40,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:59:40,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:59:40,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:59:40,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:59:40,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:59:40,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:59:40,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:59:40,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:59:40,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:59:40,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:59:40,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:59:40,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:59:40,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:59:40,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:59:40,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-14 22:59:40,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:59:40,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:59:40,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:59:40,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:59:40,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:59:40,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:59:40,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:59:40,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:59:40,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:59:40,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:59:40,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:59:40,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:59:40,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:59:40,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:59:40,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:59:40,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:59:40,406 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:59:40,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:59:40,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:59:40,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:59:40,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:59:40,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:59:40,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:59:40,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:59:40,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:59:40,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:59:40,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:59:40,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:59:40,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:59:40,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:59:40,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:59:40,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:59:40,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:59:40,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:59:40,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:59:40,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:59:40,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:59:40,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:59:40,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:59:40,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:59:40,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:59:40,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:59:40,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:59:40,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:59:40,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:59:40,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:59:40,905 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:59:40,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-14 22:59:40,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/113c3d03c/c8891096534942f0aa822c81320612c9/FLAG9d96e3db5 [2020-09-14 22:59:41,562 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:59:41,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-14 22:59:41,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/113c3d03c/c8891096534942f0aa822c81320612c9/FLAG9d96e3db5 [2020-09-14 22:59:41,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/113c3d03c/c8891096534942f0aa822c81320612c9 [2020-09-14 22:59:41,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:59:41,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:59:41,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:59:41,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:59:41,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:59:41,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:59:41" (1/1) ... [2020-09-14 22:59:41,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:41, skipping insertion in model container [2020-09-14 22:59:41,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:59:41" (1/1) ... [2020-09-14 22:59:41,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:59:41,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:59:42,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:59:42,450 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:59:42,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:59:42,599 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:59:42,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42 WrapperNode [2020-09-14 22:59:42,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:59:42,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:59:42,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:59:42,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:59:42,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:59:42,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:59:42,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:59:42,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:59:42,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (1/1) ... [2020-09-14 22:59:42,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:59:42,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:59:42,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:59:42,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:59:42,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (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 [2020-09-14 22:59:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:59:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:59:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:59:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:59:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:59:42,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:59:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:59:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:59:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:59:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:59:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:59:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:59:42,801 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:59:43,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:59:43,167 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:59:43,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:59:43 BoogieIcfgContainer [2020-09-14 22:59:43,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:59:43,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:59:43,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:59:43,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:59:43,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:59:41" (1/3) ... [2020-09-14 22:59:43,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ca367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:59:43, skipping insertion in model container [2020-09-14 22:59:43,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:59:42" (2/3) ... [2020-09-14 22:59:43,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ca367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:59:43, skipping insertion in model container [2020-09-14 22:59:43,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:59:43" (3/3) ... [2020-09-14 22:59:43,182 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-09-14 22:59:43,193 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:59:43,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:59:43,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:59:43,205 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:59:43,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:59:43,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:59:43,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:59:43,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:59:43,312 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:59:43,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:59:43,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:59:43,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:59:43,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:59:43,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:59:43,331 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-14 22:59:43,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-14 22:59:43,381 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-14 22:59:43,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:59:43,387 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:59:43,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-14 22:59:43,410 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-14 22:59:43,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:59:43,411 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-14 22:59:43,414 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-14 22:59:43,415 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:59:44,793 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-14 22:59:44,882 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-14 22:59:44,882 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-14 22:59:44,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 22:59:44,913 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-14 22:59:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-14 22:59:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:59:44,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:44,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:44,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:44,933 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-14 22:59:44,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:44,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790716097] [2020-09-14 22:59:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:45,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790716097] [2020-09-14 22:59:45,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:45,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:45,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32491868] [2020-09-14 22:59:45,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 22:59:45,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:45,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 22:59:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 22:59:45,163 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-14 22:59:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:45,198 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-14 22:59:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 22:59:45,200 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-14 22:59:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:45,218 INFO L225 Difference]: With dead ends: 274 [2020-09-14 22:59:45,219 INFO L226 Difference]: Without dead ends: 226 [2020-09-14 22:59:45,220 INFO L675 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 [2020-09-14 22:59:45,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-14 22:59:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-14 22:59:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-14 22:59:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-14 22:59:45,292 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-14 22:59:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:45,293 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-14 22:59:45,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 22:59:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-14 22:59:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:59:45,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:45,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:45,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:59:45,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:45,296 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-14 22:59:45,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:45,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078505618] [2020-09-14 22:59:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:45,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078505618] [2020-09-14 22:59:45,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:45,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:45,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965639510] [2020-09-14 22:59:45,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:45,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:45,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:45,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:45,493 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-14 22:59:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:45,526 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-09-14 22:59:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:45,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 22:59:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:45,530 INFO L225 Difference]: With dead ends: 250 [2020-09-14 22:59:45,530 INFO L226 Difference]: Without dead ends: 202 [2020-09-14 22:59:45,531 INFO L675 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 [2020-09-14 22:59:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-14 22:59:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-14 22:59:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-14 22:59:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-09-14 22:59:45,559 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-09-14 22:59:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:45,559 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-09-14 22:59:45,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-09-14 22:59:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:59:45,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:45,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:45,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:59:45,563 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:45,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-09-14 22:59:45,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:45,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977906347] [2020-09-14 22:59:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:45,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977906347] [2020-09-14 22:59:45,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:45,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:59:45,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137799475] [2020-09-14 22:59:45,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:45,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:45,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:45,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:45,705 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-09-14 22:59:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:45,731 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-09-14 22:59:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:45,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-14 22:59:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:45,734 INFO L225 Difference]: With dead ends: 232 [2020-09-14 22:59:45,734 INFO L226 Difference]: Without dead ends: 196 [2020-09-14 22:59:45,734 INFO L675 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 [2020-09-14 22:59:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-14 22:59:45,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-14 22:59:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-14 22:59:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-14 22:59:45,748 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-14 22:59:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:45,749 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-14 22:59:45,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-14 22:59:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:59:45,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:45,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:45,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:59:45,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-14 22:59:45,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:45,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124737713] [2020-09-14 22:59:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:45,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124737713] [2020-09-14 22:59:45,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:45,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:45,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078448937] [2020-09-14 22:59:45,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:59:45,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:45,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:59:45,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:45,825 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-09-14 22:59:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:45,878 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-14 22:59:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:59:45,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-14 22:59:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:45,881 INFO L225 Difference]: With dead ends: 255 [2020-09-14 22:59:45,881 INFO L226 Difference]: Without dead ends: 150 [2020-09-14 22:59:45,881 INFO L675 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 [2020-09-14 22:59:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-14 22:59:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-14 22:59:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-14 22:59:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-14 22:59:45,891 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-14 22:59:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-14 22:59:45,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:59:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-14 22:59:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:59:45,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:45,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:45,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:59:45,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-14 22:59:45,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:45,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515648530] [2020-09-14 22:59:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515648530] [2020-09-14 22:59:46,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:46,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790520040] [2020-09-14 22:59:46,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:46,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:46,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:46,019 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-09-14 22:59:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,055 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-09-14 22:59:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:46,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:59:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,062 INFO L225 Difference]: With dead ends: 164 [2020-09-14 22:59:46,062 INFO L226 Difference]: Without dead ends: 128 [2020-09-14 22:59:46,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-14 22:59:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-14 22:59:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-14 22:59:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-09-14 22:59:46,069 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-09-14 22:59:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,069 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-09-14 22:59:46,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-09-14 22:59:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:59:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:46,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:46,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:59:46,071 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-09-14 22:59:46,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:46,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364100671] [2020-09-14 22:59:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364100671] [2020-09-14 22:59:46,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:59:46,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377364625] [2020-09-14 22:59:46,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:59:46,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:59:46,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:46,143 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-09-14 22:59:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,201 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-09-14 22:59:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:59:46,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 22:59:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,202 INFO L225 Difference]: With dead ends: 116 [2020-09-14 22:59:46,202 INFO L226 Difference]: Without dead ends: 92 [2020-09-14 22:59:46,203 INFO L675 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 [2020-09-14 22:59:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-14 22:59:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-14 22:59:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-14 22:59:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-14 22:59:46,206 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-09-14 22:59:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,207 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-14 22:59:46,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:59:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-14 22:59:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:59:46,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:46,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:46,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:59:46,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:46,209 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-14 22:59:46,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:46,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732146987] [2020-09-14 22:59:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732146987] [2020-09-14 22:59:46,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:59:46,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241084703] [2020-09-14 22:59:46,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:59:46,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:59:46,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:59:46,290 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-14 22:59:46,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,316 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-14 22:59:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:46,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:59:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,318 INFO L225 Difference]: With dead ends: 120 [2020-09-14 22:59:46,318 INFO L226 Difference]: Without dead ends: 94 [2020-09-14 22:59:46,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-14 22:59:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-14 22:59:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-14 22:59:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-14 22:59:46,326 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-14 22:59:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,326 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-14 22:59:46,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:59:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-14 22:59:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:59:46,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:46,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:46,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:59:46,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-14 22:59:46,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:46,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558500197] [2020-09-14 22:59:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558500197] [2020-09-14 22:59:46,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-14 22:59:46,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274588391] [2020-09-14 22:59:46,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-14 22:59:46,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-14 22:59:46,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-14 22:59:46,487 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-09-14 22:59:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,659 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-09-14 22:59:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-14 22:59:46,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-14 22:59:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,661 INFO L225 Difference]: With dead ends: 119 [2020-09-14 22:59:46,661 INFO L226 Difference]: Without dead ends: 76 [2020-09-14 22:59:46,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-14 22:59:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-14 22:59:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-09-14 22:59:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-14 22:59:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-09-14 22:59:46,664 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-09-14 22:59:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,664 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-09-14 22:59:46,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-14 22:59:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-09-14 22:59:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:59:46,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:46,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:46,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:59:46,672 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-14 22:59:46,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:46,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154029538] [2020-09-14 22:59:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154029538] [2020-09-14 22:59:46,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:59:46,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486291215] [2020-09-14 22:59:46,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:59:46,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:59:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:59:46,777 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-09-14 22:59:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,829 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-09-14 22:59:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:59:46,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 22:59:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,831 INFO L225 Difference]: With dead ends: 65 [2020-09-14 22:59:46,831 INFO L226 Difference]: Without dead ends: 28 [2020-09-14 22:59:46,832 INFO L675 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 [2020-09-14 22:59:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-14 22:59:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-14 22:59:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-14 22:59:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-09-14 22:59:46,834 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-09-14 22:59:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,834 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-09-14 22:59:46,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:59:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-09-14 22:59:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 22:59:46,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:59:46,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:59:46,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:59:46,835 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:59:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:59:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-09-14 22:59:46,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:59:46,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330416376] [2020-09-14 22:59:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:59:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:59:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:59:46,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330416376] [2020-09-14 22:59:46,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:59:46,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:59:46,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409518487] [2020-09-14 22:59:46,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:59:46,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:59:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:59:46,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:59:46,912 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 5 states. [2020-09-14 22:59:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:59:46,935 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-14 22:59:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:59:46,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-14 22:59:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:59:46,936 INFO L225 Difference]: With dead ends: 27 [2020-09-14 22:59:46,936 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:59:46,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:59:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:59:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:59:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:59:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:59:46,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 22:59:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:59:46,938 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:59:46,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:59:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:59:46,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:59:46,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:59:46,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:59:46 BasicIcfg [2020-09-14 22:59:46,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:59:46,946 INFO L168 Benchmark]: Toolchain (without parser) took 5109.87 ms. Allocated memory was 139.5 MB in the beginning and 250.6 MB in the end (delta: 111.1 MB). Free memory was 101.7 MB in the beginning and 140.9 MB in the end (delta: -39.2 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,946 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:59:46,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.43 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 160.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.77 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 157.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,949 INFO L168 Benchmark]: Boogie Preprocessor took 30.51 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,950 INFO L168 Benchmark]: RCFGBuilder took 460.11 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,951 INFO L168 Benchmark]: TraceAbstraction took 3769.44 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 133.7 MB in the beginning and 140.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:59:46,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.43 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 160.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.77 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 157.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.51 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.11 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 134.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3769.44 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 133.7 MB in the beginning and 140.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 196 SDtfs, 191 SDslu, 357 SDs, 0 SdLazy, 212 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4422 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...