/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:29:31,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:29:31,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:29:31,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:29:31,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:29:31,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:29:31,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:29:31,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:29:31,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:29:31,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:29:31,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:29:31,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:29:32,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:29:32,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:29:32,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:29:32,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:29:32,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:29:32,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:29:32,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:29:32,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:29:32,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:29:32,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:29:32,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:29:32,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:29:32,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:29:32,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:29:32,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:29:32,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:29:32,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:29:32,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:29:32,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:29:32,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:29:32,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:29:32,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:29:32,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:29:32,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:29:32,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:29:32,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:29:32,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:29:32,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:29:32,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:29:32,025 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 [2020-10-12 20:29:32,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:29:32,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:29:32,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:29:32,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:29:32,049 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:29:32,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:29:32,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:29:32,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:29:32,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:29:32,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:29:32,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:29:32,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:29:32,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:29:32,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:29:32,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:29:32,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:29:32,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:29:32,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:29:32,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:29:32,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:29:32,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:29:32,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:29:32,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:29:32,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:29:32,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:29:32,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:29:32,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:29:32,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:29:32,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:29:32,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:29:32,388 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:29:32,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4f25aaf4/28d9f2f6bec54ccfa487f6afe274ab46/FLAG9ac43c4e7 [2020-10-12 20:29:33,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:29:33,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:29:33,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4f25aaf4/28d9f2f6bec54ccfa487f6afe274ab46/FLAG9ac43c4e7 [2020-10-12 20:29:33,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4f25aaf4/28d9f2f6bec54ccfa487f6afe274ab46 [2020-10-12 20:29:33,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:29:33,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:29:33,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:29:33,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:29:33,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:29:33,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:29:33" (1/1) ... [2020-10-12 20:29:33,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742cf951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:33, skipping insertion in model container [2020-10-12 20:29:33,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:29:33" (1/1) ... [2020-10-12 20:29:33,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:29:33,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:29:34,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:29:34,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:29:34,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:29:34,450 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:29:34,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34 WrapperNode [2020-10-12 20:29:34,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:29:34,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:29:34,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:29:34,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:29:34,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (1/1) ... [2020-10-12 20:29:34,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:29:34,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:29:34,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:29:34,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:29:34,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (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 [2020-10-12 20:29:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:29:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:29:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:29:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:29:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:29:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:29:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:29:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:29:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:29:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:29:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:29:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:29:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:29:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:29:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:29:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:29:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:29:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:29:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:29:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:29:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:29:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:29:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:29:37,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:29:37,211 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:29:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:29:37 BoogieIcfgContainer [2020-10-12 20:29:37,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:29:37,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:29:37,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:29:37,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:29:37,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:29:33" (1/3) ... [2020-10-12 20:29:37,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3132de0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:29:37, skipping insertion in model container [2020-10-12 20:29:37,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:29:34" (2/3) ... [2020-10-12 20:29:37,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3132de0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:29:37, skipping insertion in model container [2020-10-12 20:29:37,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:29:37" (3/3) ... [2020-10-12 20:29:37,231 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:29:37,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:29:37,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:29:37,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:29:37,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:29:37,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:29:37,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:29:37,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:29:37,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:29:37,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:29:37,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:29:37,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:29:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2020-10-12 20:29:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 20:29:37,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:37,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:37,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:37,362 INFO L82 PathProgramCache]: Analyzing trace with hash 202782792, now seen corresponding path program 1 times [2020-10-12 20:29:37,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:37,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663529971] [2020-10-12 20:29:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:43,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-12 20:29:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:29:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5237 [2020-10-12 20:29:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:29:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:29:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:29:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:29:44,373 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:29:44,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:44,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:44,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:44,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 20:29:44,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:29:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:44,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663529971] [2020-10-12 20:29:44,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:44,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:29:44,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741688806] [2020-10-12 20:29:44,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:29:44,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:29:44,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:29:44,591 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 8 states. [2020-10-12 20:29:45,459 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-12 20:29:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:51,768 INFO L93 Difference]: Finished difference Result 3099 states and 5338 transitions. [2020-10-12 20:29:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:29:51,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-12 20:29:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:51,819 INFO L225 Difference]: With dead ends: 3099 [2020-10-12 20:29:51,819 INFO L226 Difference]: Without dead ends: 2842 [2020-10-12 20:29:51,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:29:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-10-12 20:29:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1008. [2020-10-12 20:29:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-12 20:29:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1745 transitions. [2020-10-12 20:29:52,003 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1745 transitions. Word has length 217 [2020-10-12 20:29:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:52,005 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1745 transitions. [2020-10-12 20:29:52,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:29:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1745 transitions. [2020-10-12 20:29:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 20:29:52,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:52,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:52,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:29:52,011 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:52,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:52,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1920573290, now seen corresponding path program 1 times [2020-10-12 20:29:52,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:52,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745509179] [2020-10-12 20:29:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:57,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:57,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 20:29:57,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:29:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 20:29:57,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:29:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-12 20:29:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:29:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:58,132 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:29:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:29:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:29:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:58,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745509179] [2020-10-12 20:29:58,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:58,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:29:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634333357] [2020-10-12 20:29:58,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:29:58,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:58,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:29:58,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:29:58,334 INFO L87 Difference]: Start difference. First operand 1008 states and 1745 transitions. Second operand 9 states. [2020-10-12 20:29:59,222 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 20:30:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:07,731 INFO L93 Difference]: Finished difference Result 7460 states and 12638 transitions. [2020-10-12 20:30:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:30:07,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-10-12 20:30:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:07,768 INFO L225 Difference]: With dead ends: 7460 [2020-10-12 20:30:07,768 INFO L226 Difference]: Without dead ends: 7004 [2020-10-12 20:30:07,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:30:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2020-10-12 20:30:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 2285. [2020-10-12 20:30:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-10-12 20:30:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3902 transitions. [2020-10-12 20:30:07,970 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3902 transitions. Word has length 218 [2020-10-12 20:30:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:07,972 INFO L479 AbstractCegarLoop]: Abstraction has 2285 states and 3902 transitions. [2020-10-12 20:30:07,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:30:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3902 transitions. [2020-10-12 20:30:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-12 20:30:07,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:07,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:30:07,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:30:07,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -657938097, now seen corresponding path program 1 times [2020-10-12 20:30:07,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:07,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776414047] [2020-10-12 20:30:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:13,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-12 20:30:13,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:30:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-12 20:30:13,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:30:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:30:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 20:30:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:30:14,148 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:30:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:14,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:14,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:14,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:30:14,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:30:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:14,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776414047] [2020-10-12 20:30:14,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:14,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:30:14,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486495111] [2020-10-12 20:30:14,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:30:14,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:14,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:30:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:30:14,336 INFO L87 Difference]: Start difference. First operand 2285 states and 3902 transitions. Second operand 9 states. [2020-10-12 20:30:15,220 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 20:30:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:23,031 INFO L93 Difference]: Finished difference Result 21299 states and 35973 transitions. [2020-10-12 20:30:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:30:23,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-10-12 20:30:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:23,112 INFO L225 Difference]: With dead ends: 21299 [2020-10-12 20:30:23,112 INFO L226 Difference]: Without dead ends: 19748 [2020-10-12 20:30:23,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:30:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2020-10-12 20:30:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 6087. [2020-10-12 20:30:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6087 states. [2020-10-12 20:30:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6087 states to 6087 states and 10309 transitions. [2020-10-12 20:30:23,861 INFO L78 Accepts]: Start accepts. Automaton has 6087 states and 10309 transitions. Word has length 219 [2020-10-12 20:30:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:23,862 INFO L479 AbstractCegarLoop]: Abstraction has 6087 states and 10309 transitions. [2020-10-12 20:30:23,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:30:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 6087 states and 10309 transitions. [2020-10-12 20:30:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 20:30:23,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:23,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:30:23,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:30:23,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:23,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1017145553, now seen corresponding path program 1 times [2020-10-12 20:30:23,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:23,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739300757] [2020-10-12 20:30:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:29,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-12 20:30:29,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:30:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 20:30:29,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:30:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:30:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 20:30:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:29,898 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:30:29,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:29,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:29,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:30:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:30,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739300757] [2020-10-12 20:30:30,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:30,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:30:30,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132812580] [2020-10-12 20:30:30,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:30:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:30:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:30:30,024 INFO L87 Difference]: Start difference. First operand 6087 states and 10309 transitions. Second operand 9 states. [2020-10-12 20:30:30,863 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 20:30:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:40,801 INFO L93 Difference]: Finished difference Result 60756 states and 102389 transitions. [2020-10-12 20:30:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:30:40,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2020-10-12 20:30:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:40,944 INFO L225 Difference]: With dead ends: 60756 [2020-10-12 20:30:40,944 INFO L226 Difference]: Without dead ends: 55645 [2020-10-12 20:30:40,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:30:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55645 states. [2020-10-12 20:30:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55645 to 16739. [2020-10-12 20:30:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16739 states. [2020-10-12 20:30:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16739 states to 16739 states and 28232 transitions. [2020-10-12 20:30:43,333 INFO L78 Accepts]: Start accepts. Automaton has 16739 states and 28232 transitions. Word has length 220 [2020-10-12 20:30:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:43,334 INFO L479 AbstractCegarLoop]: Abstraction has 16739 states and 28232 transitions. [2020-10-12 20:30:43,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:30:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 16739 states and 28232 transitions. [2020-10-12 20:30:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 20:30:43,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:43,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:30:43,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:30:43,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1409689174, now seen corresponding path program 1 times [2020-10-12 20:30:43,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:43,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084505442] [2020-10-12 20:30:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:44,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:48,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-12 20:30:48,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:30:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:30:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:30:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:30:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:30:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:49,218 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:30:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:49,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:49,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:49,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084505442] [2020-10-12 20:30:49,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:49,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:30:49,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533973230] [2020-10-12 20:30:49,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:30:49,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:49,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:30:49,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:30:49,303 INFO L87 Difference]: Start difference. First operand 16739 states and 28232 transitions. Second operand 9 states. [2020-10-12 20:30:50,082 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 20:31:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:31:07,412 INFO L93 Difference]: Finished difference Result 176140 states and 296364 transitions. [2020-10-12 20:31:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:31:07,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-10-12 20:31:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:31:07,792 INFO L225 Difference]: With dead ends: 176140 [2020-10-12 20:31:07,792 INFO L226 Difference]: Without dead ends: 160651 [2020-10-12 20:31:07,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:31:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160651 states. [2020-10-12 20:31:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160651 to 46368. [2020-10-12 20:31:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46368 states. [2020-10-12 20:31:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46368 states to 46368 states and 78026 transitions. [2020-10-12 20:31:12,082 INFO L78 Accepts]: Start accepts. Automaton has 46368 states and 78026 transitions. Word has length 221 [2020-10-12 20:31:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:31:12,083 INFO L479 AbstractCegarLoop]: Abstraction has 46368 states and 78026 transitions. [2020-10-12 20:31:12,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:31:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 46368 states and 78026 transitions. [2020-10-12 20:31:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-12 20:31:12,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:31:12,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:31:12,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:31:12,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:31:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:31:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash 698197560, now seen corresponding path program 1 times [2020-10-12 20:31:12,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:31:12,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636298678] [2020-10-12 20:31:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:31:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-12 20:31:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:31:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:31:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:31:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:31:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:31:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:31:17,983 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:31:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:31:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:18,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:18,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:31:18,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:31:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:31:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:31:18,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636298678] [2020-10-12 20:31:18,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:31:18,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:31:18,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448111406] [2020-10-12 20:31:18,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:31:18,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:31:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:31:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:31:18,055 INFO L87 Difference]: Start difference. First operand 46368 states and 78026 transitions. Second operand 9 states. [2020-10-12 20:31:18,892 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-12 20:32:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:32:02,122 INFO L93 Difference]: Finished difference Result 514228 states and 864182 transitions. [2020-10-12 20:32:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:32:02,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-10-12 20:32:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:32:02,845 INFO L225 Difference]: With dead ends: 514228 [2020-10-12 20:32:02,846 INFO L226 Difference]: Without dead ends: 469280 [2020-10-12 20:32:02,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:32:03,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469280 states. [2020-10-12 20:32:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469280 to 129880. [2020-10-12 20:32:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129880 states. [2020-10-12 20:32:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129880 states to 129880 states and 218230 transitions. [2020-10-12 20:32:18,428 INFO L78 Accepts]: Start accepts. Automaton has 129880 states and 218230 transitions. Word has length 222 [2020-10-12 20:32:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:32:18,428 INFO L479 AbstractCegarLoop]: Abstraction has 129880 states and 218230 transitions. [2020-10-12 20:32:18,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:32:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 129880 states and 218230 transitions. [2020-10-12 20:32:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 20:32:18,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:32:18,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:32:18,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:32:18,435 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:32:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:32:18,436 INFO L82 PathProgramCache]: Analyzing trace with hash -536661240, now seen corresponding path program 1 times [2020-10-12 20:32:18,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:32:18,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201177715] [2020-10-12 20:32:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:32:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:23,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:23,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:32:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:32:24,364 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 20:32:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:32:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:24,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:32:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:32:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:32:24,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:32:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:32:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:32:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:32:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:32:24,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201177715] [2020-10-12 20:32:24,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:32:24,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:32:24,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617347664] [2020-10-12 20:32:24,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:32:24,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:32:24,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:32:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:32:24,466 INFO L87 Difference]: Start difference. First operand 129880 states and 218230 transitions. Second operand 8 states. [2020-10-12 20:32:25,443 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 396