/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:58,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:58,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:59,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:59,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:59,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:59,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:59,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:59,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:59,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:59,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:59,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:59,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:59,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:59,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:59,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:59,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:59,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:59,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:59,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:59,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:59,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:59,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:59,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:59,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:59,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:59,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:59,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:59,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:59,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:59,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:59,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:59,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:59,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:59,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:59,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:59,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:59,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:59,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:59,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:59,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:59,080 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 13:35:59,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:59,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:59,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:59,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:59,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:59,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:59,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:59,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:59,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:59,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:59,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:59,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:59,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:59,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:59,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:59,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:59,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:59,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:59,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:59,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:59,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:59,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:59,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:59,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:59,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:59,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:59,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:59,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:59,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:59,113 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:59,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:59,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:59,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:59,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:59,625 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:59,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 13:35:59,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66dcd716e/c34138e15c6948f98a33c735616703e1/FLAGc433b3b39 [2020-09-25 13:36:00,407 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:36:00,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 13:36:00,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66dcd716e/c34138e15c6948f98a33c735616703e1/FLAGc433b3b39 [2020-09-25 13:36:00,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66dcd716e/c34138e15c6948f98a33c735616703e1 [2020-09-25 13:36:00,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:36:00,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:36:00,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:00,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:36:00,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:36:00,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:00" (1/1) ... [2020-09-25 13:36:00,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb494d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:00, skipping insertion in model container [2020-09-25 13:36:00,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:00" (1/1) ... [2020-09-25 13:36:00,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:36:00,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:36:01,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:01,360 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:36:01,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:01,531 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:36:01,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01 WrapperNode [2020-09-25 13:36:01,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:01,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:36:01,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:36:01,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:36:01,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (1/1) ... [2020-09-25 13:36:01,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:36:01,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:36:01,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:36:01,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:36:01,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (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 13:36:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:36:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:36:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:36:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:36:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:36:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:36:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:36:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:36:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:36:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:36:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:36:03,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:36:03,522 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:36:03,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:03 BoogieIcfgContainer [2020-09-25 13:36:03,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:36:03,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:36:03,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:36:03,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:36:03,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:36:00" (1/3) ... [2020-09-25 13:36:03,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2167c4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:03, skipping insertion in model container [2020-09-25 13:36:03,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:01" (2/3) ... [2020-09-25 13:36:03,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2167c4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:03, skipping insertion in model container [2020-09-25 13:36:03,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:03" (3/3) ... [2020-09-25 13:36:03,545 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 13:36:03,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:36:03,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:36:03,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:36:03,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:36:03,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:36:03,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:36:03,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:36:03,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:36:03,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:36:03,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:36:03,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:36:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 13:36:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:36:03,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:03,688 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] [2020-09-25 13:36:03,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:03,697 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 13:36:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:03,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536826511] [2020-09-25 13:36:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:36:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:36:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 13:36:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:04,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:36:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:36:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:04,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:36:04,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:04,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:04,829 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 13:36:04,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536826511] [2020-09-25 13:36:04,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:04,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:04,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281308619] [2020-09-25 13:36:04,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:04,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:04,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:04,869 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 13:36:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:07,641 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 13:36:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:36:07,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 13:36:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:07,671 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 13:36:07,672 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 13:36:07,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:36:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 13:36:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 13:36:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 13:36:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 13:36:07,797 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 67 [2020-09-25 13:36:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:07,798 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 13:36:07,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 13:36:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 13:36:07,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:07,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:07,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:36:07,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:07,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1248724664, now seen corresponding path program 1 times [2020-09-25 13:36:07,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:07,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457500790] [2020-09-25 13:36:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:12,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 13:36:12,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:36:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:12,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 13:36:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:36:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 13:36:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:13,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:36:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:13,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457500790] [2020-09-25 13:36:13,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:13,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:13,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006608720] [2020-09-25 13:36:13,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:13,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:13,404 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 13:36:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:18,506 INFO L93 Difference]: Finished difference Result 2929 states and 3856 transitions. [2020-09-25 13:36:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:36:18,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 13:36:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:18,523 INFO L225 Difference]: With dead ends: 2929 [2020-09-25 13:36:18,523 INFO L226 Difference]: Without dead ends: 2138 [2020-09-25 13:36:18,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:36:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2020-09-25 13:36:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2079. [2020-09-25 13:36:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-09-25 13:36:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2622 transitions. [2020-09-25 13:36:18,635 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2622 transitions. Word has length 146 [2020-09-25 13:36:18,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:18,638 INFO L479 AbstractCegarLoop]: Abstraction has 2079 states and 2622 transitions. [2020-09-25 13:36:18,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2622 transitions. [2020-09-25 13:36:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 13:36:18,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:18,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:18,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:36:18,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:18,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 13:36:18,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:18,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222068117] [2020-09-25 13:36:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 13:36:22,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3827 [2020-09-25 13:36:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 13:36:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:22,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:36:22,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:36:22,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 13:36:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:36:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:22,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222068117] [2020-09-25 13:36:22,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:22,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:22,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039184157] [2020-09-25 13:36:22,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:22,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:22,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:22,941 INFO L87 Difference]: Start difference. First operand 2079 states and 2622 transitions. Second operand 8 states. [2020-09-25 13:36:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:26,484 INFO L93 Difference]: Finished difference Result 5087 states and 6603 transitions. [2020-09-25 13:36:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:26,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 13:36:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:26,502 INFO L225 Difference]: With dead ends: 5087 [2020-09-25 13:36:26,502 INFO L226 Difference]: Without dead ends: 3023 [2020-09-25 13:36:26,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:36:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-09-25 13:36:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2133. [2020-09-25 13:36:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-09-25 13:36:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 2561 transitions. [2020-09-25 13:36:26,601 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 2561 transitions. Word has length 149 [2020-09-25 13:36:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:26,603 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 2561 transitions. [2020-09-25 13:36:26,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 2561 transitions. [2020-09-25 13:36:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 13:36:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:26,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:26,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:26,610 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:26,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1077856175, now seen corresponding path program 1 times [2020-09-25 13:36:26,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:26,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879797925] [2020-09-25 13:36:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:29,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:31,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 13:36:31,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:36:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:36:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:31,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:36:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 13:36:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:36:31,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:31,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:36:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:32,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:36:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 13:36:32,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:32,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:36:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:36:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:32,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:32,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:36:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 13:36:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:36:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:32,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879797925] [2020-09-25 13:36:32,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:32,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:32,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825492159] [2020-09-25 13:36:32,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:32,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:32,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:32,751 INFO L87 Difference]: Start difference. First operand 2133 states and 2561 transitions. Second operand 8 states. [2020-09-25 13:36:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:37,789 INFO L93 Difference]: Finished difference Result 5277 states and 6707 transitions. [2020-09-25 13:36:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:36:37,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-25 13:36:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:37,811 INFO L225 Difference]: With dead ends: 5277 [2020-09-25 13:36:37,812 INFO L226 Difference]: Without dead ends: 3159 [2020-09-25 13:36:37,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:36:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-09-25 13:36:37,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2674. [2020-09-25 13:36:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-09-25 13:36:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3210 transitions. [2020-09-25 13:36:37,954 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3210 transitions. Word has length 244 [2020-09-25 13:36:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:37,955 INFO L479 AbstractCegarLoop]: Abstraction has 2674 states and 3210 transitions. [2020-09-25 13:36:37,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3210 transitions. [2020-09-25 13:36:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 13:36:37,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:37,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:37,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:37,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -740360978, now seen corresponding path program 1 times [2020-09-25 13:36:37,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:37,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002942218] [2020-09-25 13:36:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:43,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:43,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 13:36:43,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:36:43,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:43,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 13:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:36:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:43,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:43,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:36:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 13:36:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:43,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:36:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:36:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:36:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 13:36:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:43,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:36:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:43,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002942218] [2020-09-25 13:36:43,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:43,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:36:43,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296121395] [2020-09-25 13:36:43,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:43,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:43,824 INFO L87 Difference]: Start difference. First operand 2674 states and 3210 transitions. Second operand 7 states. [2020-09-25 13:36:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:47,444 INFO L93 Difference]: Finished difference Result 6118 states and 7576 transitions. [2020-09-25 13:36:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:36:47,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-25 13:36:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:47,463 INFO L225 Difference]: With dead ends: 6118 [2020-09-25 13:36:47,463 INFO L226 Difference]: Without dead ends: 2380 [2020-09-25 13:36:47,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-09-25 13:36:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1934. [2020-09-25 13:36:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-09-25 13:36:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2137 transitions. [2020-09-25 13:36:47,535 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2137 transitions. Word has length 299 [2020-09-25 13:36:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:47,536 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 2137 transitions. [2020-09-25 13:36:47,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2137 transitions. [2020-09-25 13:36:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-25 13:36:47,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:47,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:47,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:47,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:47,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1472936979, now seen corresponding path program 1 times [2020-09-25 13:36:47,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:47,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418629695] [2020-09-25 13:36:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking...