/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=1.0 --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:43,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:43,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:43,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:43,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:43,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:43,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:43,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:43,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:43,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:43,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:43,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:43,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:43,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:43,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:43,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:43,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:43,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:43,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:43,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:43,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:43,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:43,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:43,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:43,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:43,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:43,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:43,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:43,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:43,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:43,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:43,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:43,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:43,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:43,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:43,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:43,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:43,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:43,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:43,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:43,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:43,646 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 09:06:43,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:43,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:43,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:43,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:43,694 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:43,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:43,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:43,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:43,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:43,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:43,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:43,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:43,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:43,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:43,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:43,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:43,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:43,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:43,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:43,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:43,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:43,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:43,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:43,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:43,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:43,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:43,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:43,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:43,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:43,700 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:06:44,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:44,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:44,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:44,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:44,201 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:44,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 09:06:44,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8a68c5e/1ed01f4c19fc4af983594f542bb3d784/FLAGc75631df7 [2020-09-25 09:06:45,053 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:45,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 09:06:45,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8a68c5e/1ed01f4c19fc4af983594f542bb3d784/FLAGc75631df7 [2020-09-25 09:06:45,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8a68c5e/1ed01f4c19fc4af983594f542bb3d784 [2020-09-25 09:06:45,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:45,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:45,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:45,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:45,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:45,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:45" (1/1) ... [2020-09-25 09:06:45,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:45, skipping insertion in model container [2020-09-25 09:06:45,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:45" (1/1) ... [2020-09-25 09:06:45,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:45,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:46,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:46,319 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:46,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:46,540 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:46,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46 WrapperNode [2020-09-25 09:06:46,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:46,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:46,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:46,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:46,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (1/1) ... [2020-09-25 09:06:46,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:46,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:46,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:46,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:46,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (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 09:06:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:49,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:49,355 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:49,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:49 BoogieIcfgContainer [2020-09-25 09:06:49,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:49,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:49,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:49,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:49,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:45" (1/3) ... [2020-09-25 09:06:49,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:49, skipping insertion in model container [2020-09-25 09:06:49,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:46" (2/3) ... [2020-09-25 09:06:49,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:49, skipping insertion in model container [2020-09-25 09:06:49,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:49" (3/3) ... [2020-09-25 09:06:49,387 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 09:06:49,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:49,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:49,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:49,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:49,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:49,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:49,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:49,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:49,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:49,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:49,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 09:06:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 09:06:49,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:49,523 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] [2020-09-25 09:06:49,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:49,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 09:06:49,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:49,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173166384] [2020-09-25 09:06:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:06:50,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-09-25 09:06:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 09:06:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:50,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:50,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:06:50,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,620 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 09:06:50,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173166384] [2020-09-25 09:06:50,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:50,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:50,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143870074] [2020-09-25 09:06:50,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:50,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:50,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:50,658 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 09:06:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:54,328 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 09:06:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:54,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 09:06:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:54,367 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 09:06:54,367 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 09:06:54,380 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 09:06:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 09:06:54,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 09:06:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 09:06:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 09:06:54,511 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 09:06:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:54,512 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 09:06:54,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 09:06:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 09:06:54,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:54,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:54,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:54,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 09:06:54,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:54,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831623243] [2020-09-25 09:06:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 09:06:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-09-25 09:06:56,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:06:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:06:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:06:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:06:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:06:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:06:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 09:06:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:56,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831623243] [2020-09-25 09:06:56,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:56,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:56,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743580944] [2020-09-25 09:06:56,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:56,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:56,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:56,696 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 09:07:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:01,359 INFO L93 Difference]: Finished difference Result 2632 states and 3210 transitions. [2020-09-25 09:07:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:01,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-09-25 09:07:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:01,370 INFO L225 Difference]: With dead ends: 2632 [2020-09-25 09:07:01,370 INFO L226 Difference]: Without dead ends: 1652 [2020-09-25 09:07:01,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:07:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-09-25 09:07:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1412. [2020-09-25 09:07:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-09-25 09:07:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1694 transitions. [2020-09-25 09:07:01,427 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1694 transitions. Word has length 121 [2020-09-25 09:07:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:01,427 INFO L479 AbstractCegarLoop]: Abstraction has 1412 states and 1694 transitions. [2020-09-25 09:07:01,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1694 transitions. [2020-09-25 09:07:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 09:07:01,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:01,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:01,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:01,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:01,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:01,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2121372736, now seen corresponding path program 1 times [2020-09-25 09:07:01,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:01,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704655929] [2020-09-25 09:07:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:07:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4112 [2020-09-25 09:07:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:07:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:07:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 09:07:05,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:07:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:06,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704655929] [2020-09-25 09:07:06,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:06,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:07:06,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122428647] [2020-09-25 09:07:06,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:06,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:06,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:06,124 INFO L87 Difference]: Start difference. First operand 1412 states and 1694 transitions. Second operand 7 states. [2020-09-25 09:07:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:10,125 INFO L93 Difference]: Finished difference Result 3203 states and 3996 transitions. [2020-09-25 09:07:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:07:10,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-09-25 09:07:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:10,138 INFO L225 Difference]: With dead ends: 3203 [2020-09-25 09:07:10,138 INFO L226 Difference]: Without dead ends: 1808 [2020-09-25 09:07:10,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:07:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-09-25 09:07:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1772. [2020-09-25 09:07:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-09-25 09:07:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2090 transitions. [2020-09-25 09:07:10,205 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2090 transitions. Word has length 125 [2020-09-25 09:07:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:10,211 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2090 transitions. [2020-09-25 09:07:10,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2090 transitions. [2020-09-25 09:07:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 09:07:10,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:10,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:10,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:10,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:10,222 INFO L82 PathProgramCache]: Analyzing trace with hash 779885706, now seen corresponding path program 1 times [2020-09-25 09:07:10,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:10,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970028310] [2020-09-25 09:07:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 09:07:15,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:07:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:07:15,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 09:07:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:15,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:07:15,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 09:07:15,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 09:07:15,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:07:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:15,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970028310] [2020-09-25 09:07:15,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:15,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:07:15,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204172983] [2020-09-25 09:07:15,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:07:15,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:07:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:15,836 INFO L87 Difference]: Start difference. First operand 1772 states and 2090 transitions. Second operand 6 states. [2020-09-25 09:07:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:19,700 INFO L93 Difference]: Finished difference Result 4066 states and 4805 transitions. [2020-09-25 09:07:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:07:19,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-25 09:07:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:19,715 INFO L225 Difference]: With dead ends: 4066 [2020-09-25 09:07:19,715 INFO L226 Difference]: Without dead ends: 2712 [2020-09-25 09:07:19,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2020-09-25 09:07:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2647. [2020-09-25 09:07:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-09-25 09:07:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3095 transitions. [2020-09-25 09:07:19,807 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3095 transitions. Word has length 164 [2020-09-25 09:07:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:19,808 INFO L479 AbstractCegarLoop]: Abstraction has 2647 states and 3095 transitions. [2020-09-25 09:07:19,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:07:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3095 transitions. [2020-09-25 09:07:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 09:07:19,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:19,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:19,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:19,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:19,812 INFO L82 PathProgramCache]: Analyzing trace with hash 279477351, now seen corresponding path program 1 times [2020-09-25 09:07:19,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:19,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688857179] [2020-09-25 09:07:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:21,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 09:07:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:07:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-09-25 09:07:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:21,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 09:07:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:07:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:07:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:21,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 09:07:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 09:07:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:07:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:22,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688857179] [2020-09-25 09:07:22,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:22,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:07:22,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599190497] [2020-09-25 09:07:22,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:07:22,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:22,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:07:22,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:22,275 INFO L87 Difference]: Start difference. First operand 2647 states and 3095 transitions. Second operand 5 states. [2020-09-25 09:07:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:28,581 INFO L93 Difference]: Finished difference Result 5791 states and 7086 transitions. [2020-09-25 09:07:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:07:28,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 09:07:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:28,607 INFO L225 Difference]: With dead ends: 5791 [2020-09-25 09:07:28,607 INFO L226 Difference]: Without dead ends: 3956 [2020-09-25 09:07:28,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-09-25 09:07:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3916. [2020-09-25 09:07:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3916 states. [2020-09-25 09:07:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 4749 transitions. [2020-09-25 09:07:28,746 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 4749 transitions. Word has length 180 [2020-09-25 09:07:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:28,747 INFO L479 AbstractCegarLoop]: Abstraction has 3916 states and 4749 transitions. [2020-09-25 09:07:28,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:07:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 4749 transitions. [2020-09-25 09:07:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 09:07:28,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:28,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:07:28,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:28,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2038122493, now seen corresponding path program 1 times [2020-09-25 09:07:28,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:28,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712366350] [2020-09-25 09:07:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:31,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 09:07:31,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:07:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-09-25 09:07:31,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:31,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 09:07:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:07:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:31,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:31,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:31,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:07:31,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:31,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:31,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 09:07:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 09:07:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:31,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 09:07:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 09:07:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:31,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:31,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:31,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 09:07:31,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:31,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:31,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712366350] [2020-09-25 09:07:31,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:31,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:31,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820811323] [2020-09-25 09:07:31,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:31,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:31,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:31,666 INFO L87 Difference]: Start difference. First operand 3916 states and 4749 transitions. Second operand 7 states.