/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:54:03,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:54:03,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:54:03,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:54:03,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:54:03,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:54:03,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:54:03,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:54:03,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:54:03,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:54:03,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:54:03,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:54:03,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:54:03,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:54:03,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:54:03,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:54:03,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:54:03,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:54:03,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:54:03,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:54:03,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:54:03,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:54:03,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:54:03,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:54:03,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:54:03,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:54:03,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:54:03,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:54:03,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:54:03,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:54:03,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:54:03,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:54:03,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:54:03,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:54:03,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:54:03,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:54:03,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:54:03,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:54:03,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:54:03,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:54:03,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:54:03,221 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 [2020-09-24 21:54:03,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:54:03,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:54:03,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:54:03,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:54:03,250 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:54:03,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:54:03,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:54:03,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:54:03,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:54:03,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:54:03,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:54:03,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:54:03,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:54:03,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:54:03,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:54:03,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:54:03,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:54:03,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:54:03,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:54:03,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:54:03,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:54:03,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:54:03,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:54:03,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:54:03,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:54:03,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:54:03,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:54:03,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:54:03,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:54:03,260 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:54:03,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:54:03,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:54:03,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:54:03,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:54:03,772 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:54:03,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:54:03,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eafe478/83b2458701ae43b3910520ed18027549/FLAG1d38c6b71 [2020-09-24 21:54:04,569 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:54:04,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:54:04,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eafe478/83b2458701ae43b3910520ed18027549/FLAG1d38c6b71 [2020-09-24 21:54:04,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eafe478/83b2458701ae43b3910520ed18027549 [2020-09-24 21:54:04,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:54:04,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:54:04,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:04,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:54:04,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:54:04,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:04" (1/1) ... [2020-09-24 21:54:04,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5d3184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:04, skipping insertion in model container [2020-09-24 21:54:04,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:04" (1/1) ... [2020-09-24 21:54:04,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:54:04,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:54:05,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:05,707 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:54:06,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:06,205 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:54:06,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06 WrapperNode [2020-09-24 21:54:06,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:06,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:54:06,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:54:06,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:54:06,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (1/1) ... [2020-09-24 21:54:06,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:54:06,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:54:06,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:54:06,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:54:06,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (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 [2020-09-24 21:54:06,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:54:06,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:54:06,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:54:06,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:54:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:54:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:54:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 21:54:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:54:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 21:54:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:54:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:54:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 21:54:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 21:54:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 21:54:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 21:54:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 21:54:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 21:54:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:54:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:54:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:54:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:54:08,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:54:08,942 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:54:08,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:08 BoogieIcfgContainer [2020-09-24 21:54:08,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:54:08,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:54:08,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:54:08,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:54:08,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:54:04" (1/3) ... [2020-09-24 21:54:08,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6f73e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:08, skipping insertion in model container [2020-09-24 21:54:08,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:06" (2/3) ... [2020-09-24 21:54:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6f73e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:08, skipping insertion in model container [2020-09-24 21:54:08,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:08" (3/3) ... [2020-09-24 21:54:08,971 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:54:08,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:54:08,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 21:54:09,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 21:54:09,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:54:09,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:54:09,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:54:09,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:54:09,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:54:09,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:54:09,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:54:09,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:54:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states. [2020-09-24 21:54:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-09-24 21:54:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:09,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:09,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1303335379, now seen corresponding path program 1 times [2020-09-24 21:54:09,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:09,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427148004] [2020-09-24 21:54:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:11,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:14,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-09-24 21:54:14,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:54:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-24 21:54:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-24 21:54:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 21:54:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:54:15,669 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:54:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:15,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:54:15,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 21:54:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:54:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:54:16,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427148004] [2020-09-24 21:54:16,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:16,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:16,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626981164] [2020-09-24 21:54:16,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:16,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:16,125 INFO L87 Difference]: Start difference. First operand 1233 states. Second operand 5 states. [2020-09-24 21:54:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:24,527 INFO L93 Difference]: Finished difference Result 3275 states and 4224 transitions. [2020-09-24 21:54:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:54:24,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 456 [2020-09-24 21:54:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:24,567 INFO L225 Difference]: With dead ends: 3275 [2020-09-24 21:54:24,567 INFO L226 Difference]: Without dead ends: 1949 [2020-09-24 21:54:24,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-09-24 21:54:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1821. [2020-09-24 21:54:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-09-24 21:54:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2163 transitions. [2020-09-24 21:54:24,746 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2163 transitions. Word has length 456 [2020-09-24 21:54:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:24,747 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2163 transitions. [2020-09-24 21:54:24,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2163 transitions. [2020-09-24 21:54:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-09-24 21:54:24,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:24,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:24,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:54:24,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:24,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1800204659, now seen corresponding path program 1 times [2020-09-24 21:54:24,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:24,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139196551] [2020-09-24 21:54:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:29,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-09-24 21:54:29,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:54:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-24 21:54:29,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:29,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:29,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-24 21:54:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:54:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:30,566 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:54:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:30,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:30,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:54:30,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:54:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:30,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:54:30,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139196551] [2020-09-24 21:54:30,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:30,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:30,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619534980] [2020-09-24 21:54:30,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:30,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:30,912 INFO L87 Difference]: Start difference. First operand 1821 states and 2163 transitions. Second operand 5 states. [2020-09-24 21:54:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:38,839 INFO L93 Difference]: Finished difference Result 4935 states and 5897 transitions. [2020-09-24 21:54:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:38,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-09-24 21:54:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:38,858 INFO L225 Difference]: With dead ends: 4935 [2020-09-24 21:54:38,858 INFO L226 Difference]: Without dead ends: 3352 [2020-09-24 21:54:38,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2020-09-24 21:54:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3224. [2020-09-24 21:54:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-09-24 21:54:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 3855 transitions. [2020-09-24 21:54:38,992 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 3855 transitions. Word has length 457 [2020-09-24 21:54:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:38,993 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 3855 transitions. [2020-09-24 21:54:38,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 3855 transitions. [2020-09-24 21:54:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-09-24 21:54:39,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:39,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:39,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:54:39,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:39,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1530934233, now seen corresponding path program 1 times [2020-09-24 21:54:39,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:39,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231481893] [2020-09-24 21:54:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:39,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:44,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-09-24 21:54:44,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:54:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-24 21:54:44,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-24 21:54:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:54:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:44,650 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:54:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:54:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:54:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:54:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:54:44,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231481893] [2020-09-24 21:54:44,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:44,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:44,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405990297] [2020-09-24 21:54:44,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:44,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:44,959 INFO L87 Difference]: Start difference. First operand 3224 states and 3855 transitions. Second operand 5 states. [2020-09-24 21:54:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:52,463 INFO L93 Difference]: Finished difference Result 8917 states and 10703 transitions. [2020-09-24 21:54:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:52,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 458 [2020-09-24 21:54:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:52,491 INFO L225 Difference]: With dead ends: 8917 [2020-09-24 21:54:52,492 INFO L226 Difference]: Without dead ends: 6070 [2020-09-24 21:54:52,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2020-09-24 21:54:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 5955. [2020-09-24 21:54:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2020-09-24 21:54:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 7123 transitions. [2020-09-24 21:54:52,689 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 7123 transitions. Word has length 458 [2020-09-24 21:54:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:52,690 INFO L479 AbstractCegarLoop]: Abstraction has 5955 states and 7123 transitions. [2020-09-24 21:54:52,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 7123 transitions. [2020-09-24 21:54:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-09-24 21:54:52,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:52,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:52,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:54:52,704 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1681015527, now seen corresponding path program 1 times [2020-09-24 21:54:52,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:52,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624254190] [2020-09-24 21:54:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:53,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking...