/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:36,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:36,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:36,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:36,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:36,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:36,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:36,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:36,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:36,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:36,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:36,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:36,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:36,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:36,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:36,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:36,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:36,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:36,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:36,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:36,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:36,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:36,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:36,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:36,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:36,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:36,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:36,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:36,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:36,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:36,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:36,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:36,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:36,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:36,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:36,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:36,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:36,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:36,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:36,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:36,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:36,450 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 07:54:36,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:36,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:36,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:36,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:36,500 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:36,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:36,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:36,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:36,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:36,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:36,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:36,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:36,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:36,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:36,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:36,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:36,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:36,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:36,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:36,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:36,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:36,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:36,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:36,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:36,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:36,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:36,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:36,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:36,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:36,507 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:54:36,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:36,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:36,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:36,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:36,948 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:36,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 07:54:37,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48381789a/2b2cb8146d134253b758a6ef658629b4/FLAGaeaeb9b24 [2020-09-25 07:54:37,666 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:37,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 07:54:37,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48381789a/2b2cb8146d134253b758a6ef658629b4/FLAGaeaeb9b24 [2020-09-25 07:54:37,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48381789a/2b2cb8146d134253b758a6ef658629b4 [2020-09-25 07:54:37,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:37,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:37,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:37,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:37,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:37,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:37" (1/1) ... [2020-09-25 07:54:37,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:37, skipping insertion in model container [2020-09-25 07:54:37,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:37" (1/1) ... [2020-09-25 07:54:37,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:38,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:38,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:38,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:38,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:38,899 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:38,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38 WrapperNode [2020-09-25 07:54:38,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:38,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:38,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:38,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:38,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:38,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:38,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:38,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:38,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:39,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:39,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (1/1) ... [2020-09-25 07:54:39,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:39,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:39,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:39,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:39,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (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 07:54:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:40,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:40,407 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:40,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:40 BoogieIcfgContainer [2020-09-25 07:54:40,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:40,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:40,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:40,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:40,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:37" (1/3) ... [2020-09-25 07:54:40,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:40, skipping insertion in model container [2020-09-25 07:54:40,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:38" (2/3) ... [2020-09-25 07:54:40,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:40, skipping insertion in model container [2020-09-25 07:54:40,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:40" (3/3) ... [2020-09-25 07:54:40,428 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 07:54:40,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:40,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:40,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:40,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:40,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:40,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:40,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:40,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:40,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:40,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:40,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 07:54:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:40,570 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] [2020-09-25 07:54:40,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:40,577 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 07:54:40,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:40,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843007766] [2020-09-25 07:54:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:45,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:54:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:54:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 07:54:45,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:45,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 07:54:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 07:54:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:54:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:46,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:46,201 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 07:54:46,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843007766] [2020-09-25 07:54:46,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:46,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:54:46,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534935412] [2020-09-25 07:54:46,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:46,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:46,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:46,238 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:54:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:48,955 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:54:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:54:48,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 07:54:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:48,985 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:54:48,985 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:54:48,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:54:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:54:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:54:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:54:49,111 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 07:54:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:49,113 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:54:49,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:54:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 07:54:49,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:49,123 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:49,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:49,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:49,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 07:54:49,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:49,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415562282] [2020-09-25 07:54:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:54,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 07:54:54,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:54:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:54:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:54,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:54:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:54:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:54,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:54:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:54,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 07:54:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:54:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:54,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:54:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:54,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415562282] [2020-09-25 07:54:54,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:54,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:54,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740177565] [2020-09-25 07:54:54,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:54,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:54,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:54,511 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:54:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:56,805 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 07:54:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:56,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 07:54:56,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:56,819 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 07:54:56,819 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 07:54:56,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 07:54:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 07:54:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 07:54:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 07:54:56,885 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 156 [2020-09-25 07:54:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:56,886 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 07:54:56,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 07:54:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 07:54:56,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:56,891 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:56,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:56,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 07:54:56,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:56,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620159362] [2020-09-25 07:54:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:01,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:01,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:55:01,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:55:01,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:01,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:55:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:55:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:02,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:02,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:02,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:02,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:02,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:02,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:55:02,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:02,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:55:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:02,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620159362] [2020-09-25 07:55:02,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:02,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:02,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000368528] [2020-09-25 07:55:02,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:02,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:02,188 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 07:55:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:04,206 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 07:55:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:04,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 07:55:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:04,228 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 07:55:04,228 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 07:55:04,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 07:55:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 07:55:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 07:55:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 07:55:04,312 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 162 [2020-09-25 07:55:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:04,314 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 07:55:04,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 07:55:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 07:55:04,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:04,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:04,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:04,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash -997660219, now seen corresponding path program 1 times [2020-09-25 07:55:04,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:04,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235496344] [2020-09-25 07:55:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 07:55:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:55:09,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:09,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:55:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 07:55:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:55:09,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:55:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:09,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:09,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:55:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:09,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235496344] [2020-09-25 07:55:09,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:09,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:09,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849617899] [2020-09-25 07:55:09,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:09,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:09,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:09,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:09,772 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 07:55:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:12,090 INFO L93 Difference]: Finished difference Result 4518 states and 5602 transitions. [2020-09-25 07:55:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:12,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 07:55:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:12,109 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 07:55:12,110 INFO L226 Difference]: Without dead ends: 2892 [2020-09-25 07:55:12,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-09-25 07:55:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2726. [2020-09-25 07:55:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-09-25 07:55:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3280 transitions. [2020-09-25 07:55:12,196 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3280 transitions. Word has length 173 [2020-09-25 07:55:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:12,197 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 3280 transitions. [2020-09-25 07:55:12,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3280 transitions. [2020-09-25 07:55:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:55:12,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:12,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:12,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:12,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:12,208 INFO L82 PathProgramCache]: Analyzing trace with hash 911650778, now seen corresponding path program 1 times [2020-09-25 07:55:12,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:12,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262883326] [2020-09-25 07:55:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:55:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:55:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:55:17,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:55:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:55:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:55:17,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:55:17,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:17,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:55:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:17,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262883326] [2020-09-25 07:55:17,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:17,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:17,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460362861] [2020-09-25 07:55:17,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:17,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:17,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:17,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:17,489 INFO L87 Difference]: Start difference. First operand 2726 states and 3280 transitions. Second operand 7 states. [2020-09-25 07:55:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:20,381 INFO L93 Difference]: Finished difference Result 6124 states and 7542 transitions. [2020-09-25 07:55:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:20,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 07:55:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:20,397 INFO L225 Difference]: With dead ends: 6124 [2020-09-25 07:55:20,398 INFO L226 Difference]: Without dead ends: 3081 [2020-09-25 07:55:20,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-25 07:55:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2727. [2020-09-25 07:55:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-09-25 07:55:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3160 transitions. [2020-09-25 07:55:20,488 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3160 transitions. Word has length 181 [2020-09-25 07:55:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:20,489 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3160 transitions. [2020-09-25 07:55:20,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3160 transitions. [2020-09-25 07:55:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 07:55:20,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:20,500 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, 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] [2020-09-25 07:55:20,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:20,501 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:20,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:20,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1324494398, now seen corresponding path program 1 times [2020-09-25 07:55:20,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:20,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496178360] [2020-09-25 07:55:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 07:55:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:55:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:25,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:55:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:25,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:25,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:55:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:25,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496178360] [2020-09-25 07:55:25,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:25,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:25,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18301908] [2020-09-25 07:55:25,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:25,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:25,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:25,830 INFO L87 Difference]: Start difference. First operand 2727 states and 3160 transitions. Second operand 5 states. [2020-09-25 07:55:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:27,589 INFO L93 Difference]: Finished difference Result 6214 states and 7278 transitions. [2020-09-25 07:55:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:27,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-09-25 07:55:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:27,590 INFO L225 Difference]: With dead ends: 6214 [2020-09-25 07:55:27,590 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:55:27,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:27,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:55:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:55:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:55:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:55:27,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 219 [2020-09-25 07:55:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:27,606 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:55:27,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:55:27,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:55:27,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:55:27,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.