/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/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:16,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:16,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:16,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:16,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:16,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:16,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:16,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:16,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:16,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:16,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:16,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:16,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:16,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:16,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:16,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:16,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:16,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:16,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:16,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:16,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:16,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:16,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:16,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:16,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:16,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:16,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:16,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:16,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:16,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:16,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:16,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:16,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:16,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:16,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:16,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:16,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:16,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:16,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:16,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:16,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:16,574 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 09:01:16,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:16,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:16,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:16,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:16,614 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:16,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:16,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:16,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:16,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:16,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:16,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:16,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:16,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:16,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:16,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:16,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:16,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:16,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:16,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:16,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:16,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:16,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:16,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:16,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:16,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:16,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:16,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:16,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:16,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:16,623 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 09:01:17,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:17,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:17,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:17,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:17,108 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:17,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 09:01:17,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a160d42a1/b72e704364b04717bb9abb3907c1e600/FLAGd482d91f4 [2020-09-25 09:01:17,873 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:17,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 09:01:17,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a160d42a1/b72e704364b04717bb9abb3907c1e600/FLAGd482d91f4 [2020-09-25 09:01:18,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a160d42a1/b72e704364b04717bb9abb3907c1e600 [2020-09-25 09:01:18,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:18,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:18,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:18,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:18,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:18,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:18,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18, skipping insertion in model container [2020-09-25 09:01:18,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:18,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:18,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:18,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:18,753 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:18,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:18,989 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:18,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18 WrapperNode [2020-09-25 09:01:18,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:18,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:18,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:18,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:19,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (1/1) ... [2020-09-25 09:01:19,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:19,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:19,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:19,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:19,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (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 09:01:19,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:20,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:20,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:20,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:20 BoogieIcfgContainer [2020-09-25 09:01:20,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:20,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:20,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:20,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:20,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:18" (1/3) ... [2020-09-25 09:01:20,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:20, skipping insertion in model container [2020-09-25 09:01:20,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:18" (2/3) ... [2020-09-25 09:01:20,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:20, skipping insertion in model container [2020-09-25 09:01:20,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:20" (3/3) ... [2020-09-25 09:01:20,597 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 09:01:20,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:20,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:20,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:20,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:20,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:20,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:20,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:20,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:20,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:20,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:20,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 09:01:20,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:20,738 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] [2020-09-25 09:01:20,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:20,747 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 09:01:20,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:20,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-25 09:01:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:26,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 09:01:26,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:26,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:01:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:26,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 09:01:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:01:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:26,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:26,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:01:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:26,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:26,333 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 09:01:26,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-25 09:01:26,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:26,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:26,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188177439] [2020-09-25 09:01:26,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:26,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:26,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:26,369 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:28,675 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:01:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:28,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 09:01:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:28,721 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:01:28,721 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:01:28,735 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 09:01:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:01:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:01:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:28,863 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 09:01:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:28,864 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:28,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 09:01:28,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:28,876 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:28,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:28,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 09:01:28,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:28,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166632516] [2020-09-25 09:01:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:01:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:01:33,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:01:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:34,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:34,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:01:34,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:34,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:34,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:34,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 09:01:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166632516] [2020-09-25 09:01:34,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:34,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:34,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123662636] [2020-09-25 09:01:34,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:34,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:34,306 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 09:01:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:36,423 INFO L93 Difference]: Finished difference Result 1531 states and 1922 transitions. [2020-09-25 09:01:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:36,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-09-25 09:01:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:36,435 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 09:01:36,435 INFO L226 Difference]: Without dead ends: 952 [2020-09-25 09:01:36,439 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 09:01:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-09-25 09:01:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 897. [2020-09-25 09:01:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-09-25 09:01:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1106 transitions. [2020-09-25 09:01:36,507 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1106 transitions. Word has length 125 [2020-09-25 09:01:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:36,507 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1106 transitions. [2020-09-25 09:01:36,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1106 transitions. [2020-09-25 09:01:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:01:36,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:36,517 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:36,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:36,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 09:01:36,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:36,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934623002] [2020-09-25 09:01:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:01:41,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:01:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:41,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 09:01:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 09:01:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:01:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:41,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:41,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:01:41,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 09:01:41,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:41,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:41,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934623002] [2020-09-25 09:01:41,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:41,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:41,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671832692] [2020-09-25 09:01:41,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:41,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:41,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:41,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:41,880 INFO L87 Difference]: Start difference. First operand 897 states and 1106 transitions. Second operand 5 states. [2020-09-25 09:01:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:44,010 INFO L93 Difference]: Finished difference Result 2388 states and 3059 transitions. [2020-09-25 09:01:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:44,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 09:01:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:44,027 INFO L225 Difference]: With dead ends: 2388 [2020-09-25 09:01:44,027 INFO L226 Difference]: Without dead ends: 1515 [2020-09-25 09:01:44,031 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 09:01:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-09-25 09:01:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1469. [2020-09-25 09:01:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-09-25 09:01:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1842 transitions. [2020-09-25 09:01:44,101 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1842 transitions. Word has length 134 [2020-09-25 09:01:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:44,103 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1842 transitions. [2020-09-25 09:01:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1842 transitions. [2020-09-25 09:01:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:01:44,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:44,114 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:44,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:44,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 09:01:44,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:44,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598243727] [2020-09-25 09:01:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:01:46,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:01:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-09-25 09:01:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:01:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:01:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:01:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:46,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:01:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:01:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:01:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 09:01:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:01:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:01:46,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598243727] [2020-09-25 09:01:46,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:46,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:46,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408705491] [2020-09-25 09:01:46,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:46,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:46,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:46,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:46,718 INFO L87 Difference]: Start difference. First operand 1469 states and 1842 transitions. Second operand 7 states. [2020-09-25 09:01:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:48,994 INFO L93 Difference]: Finished difference Result 3084 states and 3927 transitions. [2020-09-25 09:01:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:01:48,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 09:01:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:49,010 INFO L225 Difference]: With dead ends: 3084 [2020-09-25 09:01:49,010 INFO L226 Difference]: Without dead ends: 1780 [2020-09-25 09:01:49,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-09-25 09:01:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1473. [2020-09-25 09:01:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-09-25 09:01:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1827 transitions. [2020-09-25 09:01:49,076 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1827 transitions. Word has length 181 [2020-09-25 09:01:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:49,076 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 1827 transitions. [2020-09-25 09:01:49,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1827 transitions. [2020-09-25 09:01:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 09:01:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:49,084 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:49,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:49,084 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1707194346, now seen corresponding path program 1 times [2020-09-25 09:01:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:49,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452846282] [2020-09-25 09:01:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 09:01:53,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4594 [2020-09-25 09:01:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:53,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:01:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:01:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:53,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:53,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:01:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:53,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:01:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:54,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:01:54,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:01:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:54,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 09:01:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:01:54,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452846282] [2020-09-25 09:01:54,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:54,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:01:54,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551674186] [2020-09-25 09:01:54,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:54,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:54,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:54,090 INFO L87 Difference]: Start difference. First operand 1473 states and 1827 transitions. Second operand 8 states. [2020-09-25 09:01:55,329 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 09:01:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:57,382 INFO L93 Difference]: Finished difference Result 3361 states and 4183 transitions. [2020-09-25 09:01:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:01:57,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-09-25 09:01:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:57,393 INFO L225 Difference]: With dead ends: 3361 [2020-09-25 09:01:57,393 INFO L226 Difference]: Without dead ends: 1912 [2020-09-25 09:01:57,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:01:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-09-25 09:01:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1824. [2020-09-25 09:01:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2020-09-25 09:01:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2239 transitions. [2020-09-25 09:01:57,450 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2239 transitions. Word has length 188 [2020-09-25 09:01:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:57,451 INFO L479 AbstractCegarLoop]: Abstraction has 1824 states and 2239 transitions. [2020-09-25 09:01:57,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2239 transitions. [2020-09-25 09:01:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 09:01:57,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:57,460 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:57,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:57,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1517034315, now seen corresponding path program 1 times [2020-09-25 09:01:57,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:57,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024125751] [2020-09-25 09:01:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 09:02:00,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:02:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2935 [2020-09-25 09:02:00,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 09:02:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:02:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:02:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:00,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:02:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:02:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:02:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 09:02:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:02:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:00,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:02:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:00,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 09:02:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 09:02:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:00,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:02:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 09:02:00,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024125751] [2020-09-25 09:02:00,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:00,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:00,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446480342] [2020-09-25 09:02:00,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:00,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:00,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:00,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:00,891 INFO L87 Difference]: Start difference. First operand 1824 states and 2239 transitions. Second operand 5 states. [2020-09-25 09:02:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:03,074 INFO L93 Difference]: Finished difference Result 4090 states and 5050 transitions. [2020-09-25 09:02:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:03,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-09-25 09:02:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:03,091 INFO L225 Difference]: With dead ends: 4090 [2020-09-25 09:02:03,091 INFO L226 Difference]: Without dead ends: 2067 [2020-09-25 09:02:03,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:02:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2020-09-25 09:02:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1748. [2020-09-25 09:02:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-25 09:02:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 1997 transitions. [2020-09-25 09:02:03,147 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 1997 transitions. Word has length 209 [2020-09-25 09:02:03,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:03,148 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 1997 transitions. [2020-09-25 09:02:03,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 1997 transitions. [2020-09-25 09:02:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 09:02:03,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:03,156 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:03,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:02:03,157 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash -702553439, now seen corresponding path program 1 times [2020-09-25 09:02:03,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:03,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867086329] [2020-09-25 09:02:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking...