/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=DEEPEST --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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:12:40,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:12:40,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:12:40,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:12:40,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:12:40,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:12:40,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:12:41,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:12:41,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:12:41,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:12:41,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:12:41,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:12:41,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:12:41,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:12:41,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:12:41,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:12:41,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:12:41,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:12:41,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:12:41,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:12:41,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:12:41,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:12:41,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:12:41,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:12:41,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:12:41,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:12:41,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:12:41,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:12:41,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:12:41,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:12:41,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:12:41,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:12:41,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:12:41,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:12:41,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:12:41,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:12:41,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:12:41,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:12:41,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:12:41,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:12:41,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:12:41,059 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 [2020-09-25 01:12:41,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:12:41,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:12:41,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:12:41,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:12:41,113 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:12:41,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:12:41,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:12:41,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:12:41,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:12:41,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:12:41,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:12:41,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:12:41,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:12:41,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:12:41,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:12:41,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:12:41,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:12:41,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:12:41,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:12:41,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:12:41,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:12:41,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:12:41,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:12:41,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:12:41,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:12:41,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:12:41,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:12:41,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:12:41,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:12:41,120 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:12:41,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:12:41,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:12:41,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:12:41,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:12:41,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:12:41,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:12:41,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae95dd3fa/8a85703d3a9d4787b7fd798ddc574220/FLAG03ca9405d [2020-09-25 01:12:42,379 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:12:42,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:12:42,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae95dd3fa/8a85703d3a9d4787b7fd798ddc574220/FLAG03ca9405d [2020-09-25 01:12:42,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae95dd3fa/8a85703d3a9d4787b7fd798ddc574220 [2020-09-25 01:12:42,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:12:42,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:12:42,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:12:42,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:12:42,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:12:42,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:42" (1/1) ... [2020-09-25 01:12:42,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684fb7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:42, skipping insertion in model container [2020-09-25 01:12:42,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:42" (1/1) ... [2020-09-25 01:12:42,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:12:42,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:12:43,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:12:43,314 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:12:43,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:12:43,516 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:12:43,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43 WrapperNode [2020-09-25 01:12:43,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:12:43,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:12:43,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:12:43,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:12:43,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (1/1) ... [2020-09-25 01:12:43,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:12:43,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:12:43,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:12:43,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:12:43,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (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 [2020-09-25 01:12:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:12:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:12:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:12:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:12:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:12:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 01:12:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 01:12:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 01:12:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 01:12:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:12:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:12:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 01:12:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 01:12:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 01:12:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 01:12:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 01:12:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 01:12:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 01:12:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:12:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:12:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:12:45,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:12:45,616 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 01:12:45,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:45 BoogieIcfgContainer [2020-09-25 01:12:45,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:12:45,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:12:45,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:12:45,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:12:45,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:12:42" (1/3) ... [2020-09-25 01:12:45,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd4a3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:45, skipping insertion in model container [2020-09-25 01:12:45,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:43" (2/3) ... [2020-09-25 01:12:45,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd4a3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:45, skipping insertion in model container [2020-09-25 01:12:45,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:45" (3/3) ... [2020-09-25 01:12:45,638 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:12:45,651 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:12:45,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:12:45,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:12:45,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:12:45,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:12:45,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:12:45,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:12:45,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:12:45,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:12:45,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:12:45,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:12:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 01:12:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-25 01:12:45,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:45,793 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] [2020-09-25 01:12:45,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-09-25 01:12:45,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:45,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082010653] [2020-09-25 01:12:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:48,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:51,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-09-25 01:12:51,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:12:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 01:12:51,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:12:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 01:12:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 01:12:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:12:52,186 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 01:12:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:12:52,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 01:12:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:12:52,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082010653] [2020-09-25 01:12:52,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:52,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:12:52,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294071148] [2020-09-25 01:12:52,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:12:52,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:12:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:12:52,597 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 01:12:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:58,405 INFO L93 Difference]: Finished difference Result 1918 states and 2543 transitions. [2020-09-25 01:12:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:12:58,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-09-25 01:12:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:58,454 INFO L225 Difference]: With dead ends: 1918 [2020-09-25 01:12:58,455 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 01:12:58,469 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 [2020-09-25 01:12:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 01:12:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1236. [2020-09-25 01:12:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 01:12:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1506 transitions. [2020-09-25 01:12:58,697 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1506 transitions. Word has length 407 [2020-09-25 01:12:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:58,703 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1506 transitions. [2020-09-25 01:12:58,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:12:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1506 transitions. [2020-09-25 01:12:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-25 01:12:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:58,721 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] [2020-09-25 01:12:58,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:12:58,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -390420257, now seen corresponding path program 1 times [2020-09-25 01:12:58,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:58,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955854149] [2020-09-25 01:12:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-25 01:13:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:13:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 01:13:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-25 01:13:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:13:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:13:04,259 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 01:13:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:13:04,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 01:13:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:13:04,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955854149] [2020-09-25 01:13:04,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:04,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:04,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105042905] [2020-09-25 01:13:04,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:04,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:04,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:04,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:04,482 INFO L87 Difference]: Start difference. First operand 1236 states and 1506 transitions. Second operand 4 states. [2020-09-25 01:13:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:07,474 INFO L93 Difference]: Finished difference Result 3237 states and 3987 transitions. [2020-09-25 01:13:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:07,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 408 [2020-09-25 01:13:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:07,491 INFO L225 Difference]: With dead ends: 3237 [2020-09-25 01:13:07,492 INFO L226 Difference]: Without dead ends: 2239 [2020-09-25 01:13:07,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-09-25 01:13:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1242. [2020-09-25 01:13:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-09-25 01:13:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1514 transitions. [2020-09-25 01:13:07,564 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1514 transitions. Word has length 408 [2020-09-25 01:13:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:07,566 INFO L479 AbstractCegarLoop]: Abstraction has 1242 states and 1514 transitions. [2020-09-25 01:13:07,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1514 transitions. [2020-09-25 01:13:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 01:13:07,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:07,576 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] [2020-09-25 01:13:07,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:13:07,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1544674437, now seen corresponding path program 1 times [2020-09-25 01:13:07,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:07,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222747509] [2020-09-25 01:13:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:12,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:12,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 01:13:12,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 01:13:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 01:13:12,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 01:13:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 01:13:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:13,137 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 01:13:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:13,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:13,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:13:13,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 01:13:13,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:13,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:13:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:13:13,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222747509] [2020-09-25 01:13:13,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:13,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:13,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424407997] [2020-09-25 01:13:13,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:13,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:13,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:13,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:13,594 INFO L87 Difference]: Start difference. First operand 1242 states and 1514 transitions. Second operand 4 states. [2020-09-25 01:13:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:17,988 INFO L93 Difference]: Finished difference Result 3078 states and 3802 transitions. [2020-09-25 01:13:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:17,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-09-25 01:13:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:18,000 INFO L225 Difference]: With dead ends: 3078 [2020-09-25 01:13:18,001 INFO L226 Difference]: Without dead ends: 2178 [2020-09-25 01:13:18,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2020-09-25 01:13:18,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2176. [2020-09-25 01:13:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2020-09-25 01:13:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2657 transitions. [2020-09-25 01:13:18,087 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2657 transitions. Word has length 409 [2020-09-25 01:13:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:18,088 INFO L479 AbstractCegarLoop]: Abstraction has 2176 states and 2657 transitions. [2020-09-25 01:13:18,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2657 transitions. [2020-09-25 01:13:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 01:13:18,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:18,097 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] [2020-09-25 01:13:18,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:13:18,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:18,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:18,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1174901755, now seen corresponding path program 1 times [2020-09-25 01:13:18,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:18,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856879303] [2020-09-25 01:13:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:18,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:19,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:23,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 01:13:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:13:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 01:13:23,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:13:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 01:13:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 01:13:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:13:23,663 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 01:13:23,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:23,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:23,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:13:23,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 01:13:23,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:23,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:23,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:13:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:13:23,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856879303] [2020-09-25 01:13:23,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:23,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:13:23,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023597721] [2020-09-25 01:13:23,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:13:23,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:23,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:13:23,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:13:23,935 INFO L87 Difference]: Start difference. First operand 2176 states and 2657 transitions. Second operand 5 states. [2020-09-25 01:13:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:28,752 INFO L93 Difference]: Finished difference Result 5552 states and 6852 transitions. [2020-09-25 01:13:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:13:28,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-09-25 01:13:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:28,771 INFO L225 Difference]: With dead ends: 5552 [2020-09-25 01:13:28,771 INFO L226 Difference]: Without dead ends: 3938 [2020-09-25 01:13:28,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:13:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2020-09-25 01:13:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3936. [2020-09-25 01:13:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3936 states. [2020-09-25 01:13:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 4820 transitions. [2020-09-25 01:13:28,949 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 4820 transitions. Word has length 409 [2020-09-25 01:13:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:28,950 INFO L479 AbstractCegarLoop]: Abstraction has 3936 states and 4820 transitions. [2020-09-25 01:13:28,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:13:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 4820 transitions. [2020-09-25 01:13:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 01:13:28,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:28,973 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] [2020-09-25 01:13:28,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:13:28,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1783103494, now seen corresponding path program 1 times [2020-09-25 01:13:28,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:28,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772993841] [2020-09-25 01:13:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking...