/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=0.6 --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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:19,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:19,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:19,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:19,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:19,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:19,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:19,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:19,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:19,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:19,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:19,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:19,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:19,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:19,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:19,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:19,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:19,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:19,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:19,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:19,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:19,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:19,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:19,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:19,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:19,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:19,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:19,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:19,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:19,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:19,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:19,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:19,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:19,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:19,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:19,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:19,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:19,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:19,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:19,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:19,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:19,549 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 06:46:19,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:19,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:19,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:19,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:19,576 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:19,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:19,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:19,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:19,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:19,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:19,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:19,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:19,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:19,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:19,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:19,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:19,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:19,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:19,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:19,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:19,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:19,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:19,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:19,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:19,581 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:46:20,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:20,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:20,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:20,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:20,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:20,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 06:46:20,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c649023d4/ee506a9d9454411ab30e30477d903080/FLAGe6d19aab6 [2020-09-25 06:46:20,887 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:20,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 06:46:20,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c649023d4/ee506a9d9454411ab30e30477d903080/FLAGe6d19aab6 [2020-09-25 06:46:21,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c649023d4/ee506a9d9454411ab30e30477d903080 [2020-09-25 06:46:21,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:21,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:21,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:21,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:21,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:21,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:21" (1/1) ... [2020-09-25 06:46:21,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:21, skipping insertion in model container [2020-09-25 06:46:21,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:21" (1/1) ... [2020-09-25 06:46:21,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:21,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:21,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:21,768 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:21,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:22,017 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:22,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22 WrapperNode [2020-09-25 06:46:22,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:22,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:22,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:22,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:22,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (1/1) ... [2020-09-25 06:46:22,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:22,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:22,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:22,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:22,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (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 06:46:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:23,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:23,600 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:23,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:23 BoogieIcfgContainer [2020-09-25 06:46:23,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:23,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:23,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:23,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:23,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:21" (1/3) ... [2020-09-25 06:46:23,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:23, skipping insertion in model container [2020-09-25 06:46:23,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:22" (2/3) ... [2020-09-25 06:46:23,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:23, skipping insertion in model container [2020-09-25 06:46:23,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:23" (3/3) ... [2020-09-25 06:46:23,619 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 06:46:23,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:23,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:23,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:23,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:23,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:23,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:23,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:23,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:23,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:23,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:23,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:46:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 06:46:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:23,756 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] [2020-09-25 06:46:23,757 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 06:46:23,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:23,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424934705] [2020-09-25 06:46:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 06:46:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:46:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:46:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:46:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:46:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:46:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:46:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:29,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:29,381 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 06:46:29,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424934705] [2020-09-25 06:46:29,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:29,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195009032] [2020-09-25 06:46:29,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:29,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:29,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:29,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:29,417 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:46:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:31,930 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:46:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:31,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 06:46:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:31,982 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:46:31,982 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:46:31,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:46:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:46:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:46:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:46:32,111 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 06:46:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:32,112 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:46:32,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:46:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 06:46:32,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:32,128 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] [2020-09-25 06:46:32,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:32,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 06:46:32,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:32,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343865245] [2020-09-25 06:46:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:37,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 06:46:37,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:46:37,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:46:37,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:37,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:37,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 06:46:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:37,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:46:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:37,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:46:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:37,561 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 06:46:37,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343865245] [2020-09-25 06:46:37,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:37,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:37,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453155929] [2020-09-25 06:46:37,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:37,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:37,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:37,567 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:46:39,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:39,204 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 06:46:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:39,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 06:46:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:39,216 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 06:46:39,216 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 06:46:39,220 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 06:46:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 06:46:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 06:46:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 06:46:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 06:46:39,269 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 135 [2020-09-25 06:46:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:39,271 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 06:46:39,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 06:46:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:46:39,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:39,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:39,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:39,279 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:39,280 INFO L82 PathProgramCache]: Analyzing trace with hash -334312447, now seen corresponding path program 1 times [2020-09-25 06:46:39,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:39,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281672697] [2020-09-25 06:46:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 06:46:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:46:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 06:46:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:46:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:44,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:44,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:46:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:46:44,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:46:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:44,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281672697] [2020-09-25 06:46:44,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:44,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:44,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633472330] [2020-09-25 06:46:44,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:44,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:44,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:44,601 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 5 states. [2020-09-25 06:46:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:46,855 INFO L93 Difference]: Finished difference Result 2568 states and 3389 transitions. [2020-09-25 06:46:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:46,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 06:46:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:46,871 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 06:46:46,871 INFO L226 Difference]: Without dead ends: 1623 [2020-09-25 06:46:46,876 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 06:46:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-25 06:46:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1575. [2020-09-25 06:46:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-09-25 06:46:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1954 transitions. [2020-09-25 06:46:46,955 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1954 transitions. Word has length 161 [2020-09-25 06:46:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:46,957 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 1954 transitions. [2020-09-25 06:46:46,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1954 transitions. [2020-09-25 06:46:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 06:46:46,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:46,976 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:46,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:46,976 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2022775050, now seen corresponding path program 1 times [2020-09-25 06:46:46,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:46,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736616518] [2020-09-25 06:46:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:46:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:46:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:46:52,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 06:46:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 06:46:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:46:52,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:46:52,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:52,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:46:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:46:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:46:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:46:52,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736616518] [2020-09-25 06:46:52,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:52,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:52,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598862868] [2020-09-25 06:46:52,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:52,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:52,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:52,395 INFO L87 Difference]: Start difference. First operand 1575 states and 1954 transitions. Second operand 5 states. [2020-09-25 06:46:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:54,415 INFO L93 Difference]: Finished difference Result 3838 states and 4855 transitions. [2020-09-25 06:46:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:54,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 06:46:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:54,432 INFO L225 Difference]: With dead ends: 3838 [2020-09-25 06:46:54,432 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 06:46:54,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 06:46:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 06:46:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2179. [2020-09-25 06:46:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2020-09-25 06:46:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2749 transitions. [2020-09-25 06:46:54,564 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2749 transitions. Word has length 174 [2020-09-25 06:46:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:54,564 INFO L479 AbstractCegarLoop]: Abstraction has 2179 states and 2749 transitions. [2020-09-25 06:46:54,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2749 transitions. [2020-09-25 06:46:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:46:54,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:54,574 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:54,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:54,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1188825606, now seen corresponding path program 1 times [2020-09-25 06:46:54,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:54,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075820274] [2020-09-25 06:46:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:46:59,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:46:59,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:46:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:46:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:59,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:59,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:46:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:46:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:46:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:46:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:46:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 06:46:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:59,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075820274] [2020-09-25 06:46:59,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:59,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:46:59,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156584521] [2020-09-25 06:46:59,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:46:59,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:59,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:46:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:59,941 INFO L87 Difference]: Start difference. First operand 2179 states and 2749 transitions. Second operand 8 states. [2020-09-25 06:47:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:03,734 INFO L93 Difference]: Finished difference Result 7233 states and 9840 transitions. [2020-09-25 06:47:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:03,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 06:47:03,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:03,768 INFO L225 Difference]: With dead ends: 7233 [2020-09-25 06:47:03,768 INFO L226 Difference]: Without dead ends: 5076 [2020-09-25 06:47:03,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2020-09-25 06:47:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4414. [2020-09-25 06:47:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4414 states. [2020-09-25 06:47:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 5734 transitions. [2020-09-25 06:47:03,948 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 5734 transitions. Word has length 181 [2020-09-25 06:47:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:03,948 INFO L479 AbstractCegarLoop]: Abstraction has 4414 states and 5734 transitions. [2020-09-25 06:47:03,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 5734 transitions. [2020-09-25 06:47:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:47:03,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:03,975 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:03,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:03,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash -581823592, now seen corresponding path program 1 times [2020-09-25 06:47:03,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:03,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222242879] [2020-09-25 06:47:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:47:09,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:47:09,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 06:47:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:47:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1