/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:51:21,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:51:21,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:51:21,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:51:21,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:51:21,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:51:21,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:51:21,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:51:21,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:51:21,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:51:21,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:51:21,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:51:21,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:51:21,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:51:21,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:51:21,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:51:21,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:51:21,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:51:21,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:51:21,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:51:21,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:51:21,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:51:21,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:51:21,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:51:21,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:51:21,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:51:21,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:51:21,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:51:21,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:51:21,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:51:21,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:51:21,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:51:21,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:51:21,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:51:21,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:51:21,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:51:21,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:51:21,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:51:21,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:51:21,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:51:21,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:51:21,182 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 [2020-10-14 21:51:21,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:51:21,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:51:21,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:51:21,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:51:21,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:51:21,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:51:21,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:51:21,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:51:21,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:51:21,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:51:21,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:51:21,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:51:21,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:51:21,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:51:21,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:51:21,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:51:21,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:51:21,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:51:21,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:51:21,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:51:21,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:51:21,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:51:21,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:51:21,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:51:21,235 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:51:21,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:51:21,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:51:21,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:51:21,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:51:21,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:51:21,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-14 21:51:21,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3595fd3e5/6b527782b52e4e379a8b98eb805fefd3/FLAGaee1a6b58 [2020-10-14 21:51:22,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:51:22,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-14 21:51:22,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3595fd3e5/6b527782b52e4e379a8b98eb805fefd3/FLAGaee1a6b58 [2020-10-14 21:51:22,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3595fd3e5/6b527782b52e4e379a8b98eb805fefd3 [2020-10-14 21:51:22,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:51:22,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:51:22,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:51:22,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:51:22,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:51:22,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:51:22" (1/1) ... [2020-10-14 21:51:22,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:22, skipping insertion in model container [2020-10-14 21:51:22,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:51:22" (1/1) ... [2020-10-14 21:51:22,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:51:22,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:51:23,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:51:23,992 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:51:24,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:51:24,373 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:51:24,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24 WrapperNode [2020-10-14 21:51:24,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:51:24,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:51:24,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:51:24,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:51:24,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (1/1) ... [2020-10-14 21:51:24,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:51:24,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:51:24,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:51:24,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:51:24,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (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 [2020-10-14 21:51:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:51:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:51:24,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:51:24,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:51:24,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:51:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:51:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:51:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:51:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:51:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:51:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:51:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:51:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:51:30,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:51:30,618 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:51:30,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:51:30 BoogieIcfgContainer [2020-10-14 21:51:30,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:51:30,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:51:30,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:51:30,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:51:30,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:51:22" (1/3) ... [2020-10-14 21:51:30,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a13701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:51:30, skipping insertion in model container [2020-10-14 21:51:30,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:51:24" (2/3) ... [2020-10-14 21:51:30,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a13701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:51:30, skipping insertion in model container [2020-10-14 21:51:30,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:51:30" (3/3) ... [2020-10-14 21:51:30,642 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label01.c [2020-10-14 21:51:30,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:51:30,676 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:51:30,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:51:30,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:51:30,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:51:30,780 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:51:30,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:51:30,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:51:30,780 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:51:30,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:51:30,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:51:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:51:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 21:51:30,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:51:30,823 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] [2020-10-14 21:51:30,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:51:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:51:30,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2133968144, now seen corresponding path program 1 times [2020-10-14 21:51:30,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:51:30,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803450662] [2020-10-14 21:51:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:51:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:31,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:31,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 21:51:31,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 21:51:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:31,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:51:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:51:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 21:51:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:51:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:51:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:51:31,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:51:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:31,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:51:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:51:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:51:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:51:31,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803450662] [2020-10-14 21:51:31,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:51:31,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:51:31,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642834801] [2020-10-14 21:51:31,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:51:31,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:51:31,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:51:31,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:51:31,694 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:51:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:51:40,153 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:51:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:51:40,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 21:51:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:51:40,176 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:51:40,176 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:51:40,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:51:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:51:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:51:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:51:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:51:40,287 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 50 [2020-10-14 21:51:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:51:40,288 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:51:40,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:51:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:51:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 21:51:40,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:51:40,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:51:40,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:51:40,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:51:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:51:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1286493100, now seen corresponding path program 1 times [2020-10-14 21:51:40,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:51:40,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628909740] [2020-10-14 21:51:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:51:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:40,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:40,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:51:40,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 21:51:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:40,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:51:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:51:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:51:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:51:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:51:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:51:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:51:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:51:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:51:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:40,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:51:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:41,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:41,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:51:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 21:51:41,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:41,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:51:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:51:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:51:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:51:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628909740] [2020-10-14 21:51:41,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:51:41,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:51:41,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345713958] [2020-10-14 21:51:41,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:51:41,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:51:41,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:51:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:51:41,376 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 21:51:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:51:50,831 INFO L93 Difference]: Finished difference Result 1710 states and 2417 transitions. [2020-10-14 21:51:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:51:50,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-14 21:51:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:51:50,839 INFO L225 Difference]: With dead ends: 1710 [2020-10-14 21:51:50,839 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 21:51:50,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:51:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 21:51:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1014. [2020-10-14 21:51:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 21:51:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1367 transitions. [2020-10-14 21:51:50,902 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1367 transitions. Word has length 119 [2020-10-14 21:51:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:51:50,903 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1367 transitions. [2020-10-14 21:51:50,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:51:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1367 transitions. [2020-10-14 21:51:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 21:51:50,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:51:50,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:51:50,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:51:50,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:51:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:51:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash -47160281, now seen corresponding path program 1 times [2020-10-14 21:51:50,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:51:50,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962732527] [2020-10-14 21:51:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:51:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:51,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:51,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 21:51:51,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:51:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 21:51:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:51,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:51:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:51:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:51:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:51,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:51:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:51:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:51:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:51,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:51:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:51:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:51:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:51:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:51:52,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:51:52,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:51:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:51:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:51:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 21:51:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:51:52,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:51:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:51:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:51:52,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962732527] [2020-10-14 21:51:52,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:51:52,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:51:52,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493589416] [2020-10-14 21:51:52,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:51:52,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:51:52,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:51:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:51:52,248 INFO L87 Difference]: Start difference. First operand 1014 states and 1367 transitions. Second operand 7 states. [2020-10-14 21:52:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:01,816 INFO L93 Difference]: Finished difference Result 2386 states and 3396 transitions. [2020-10-14 21:52:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:52:01,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-14 21:52:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:01,831 INFO L225 Difference]: With dead ends: 2386 [2020-10-14 21:52:01,831 INFO L226 Difference]: Without dead ends: 1685 [2020-10-14 21:52:01,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:52:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-14 21:52:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1335. [2020-10-14 21:52:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 21:52:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1730 transitions. [2020-10-14 21:52:01,895 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1730 transitions. Word has length 124 [2020-10-14 21:52:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:01,899 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1730 transitions. [2020-10-14 21:52:01,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:52:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1730 transitions. [2020-10-14 21:52:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 21:52:01,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:01,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:01,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:52:01,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash -915350638, now seen corresponding path program 1 times [2020-10-14 21:52:01,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:01,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058585266] [2020-10-14 21:52:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:02,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:02,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:52:02,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:52:02,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 21:52:02,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:02,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:52:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 21:52:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:52:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:02,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:52:02,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:02,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:52:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:52:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:52:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:52:02,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:02,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:52:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:02,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058585266] [2020-10-14 21:52:02,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:52:02,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:52:02,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767762723] [2020-10-14 21:52:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:52:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:02,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:52:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:52:02,842 INFO L87 Difference]: Start difference. First operand 1335 states and 1730 transitions. Second operand 5 states. [2020-10-14 21:52:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:12,815 INFO L93 Difference]: Finished difference Result 3632 states and 4846 transitions. [2020-10-14 21:52:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:52:12,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 21:52:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:12,838 INFO L225 Difference]: With dead ends: 3632 [2020-10-14 21:52:12,838 INFO L226 Difference]: Without dead ends: 2303 [2020-10-14 21:52:12,842 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 [2020-10-14 21:52:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-14 21:52:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2285. [2020-10-14 21:52:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-10-14 21:52:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 2888 transitions. [2020-10-14 21:52:12,918 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 2888 transitions. Word has length 145 [2020-10-14 21:52:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:12,919 INFO L479 AbstractCegarLoop]: Abstraction has 2285 states and 2888 transitions. [2020-10-14 21:52:12,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:52:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 2888 transitions. [2020-10-14 21:52:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 21:52:12,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:12,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:12,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:52:12,924 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -24553025, now seen corresponding path program 1 times [2020-10-14 21:52:12,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:12,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748602276] [2020-10-14 21:52:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:15,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 21:52:15,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:52:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-14 21:52:15,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:15,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:52:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:52:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:52:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:15,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:15,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:15,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:52:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 21:52:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:15,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:52:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:52:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:15,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748602276] [2020-10-14 21:52:15,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:52:15,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:52:15,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748234049] [2020-10-14 21:52:15,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:52:15,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:15,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:52:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:52:15,787 INFO L87 Difference]: Start difference. First operand 2285 states and 2888 transitions. Second operand 8 states. [2020-10-14 21:52:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:27,279 INFO L93 Difference]: Finished difference Result 4903 states and 6142 transitions. [2020-10-14 21:52:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:52:27,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-14 21:52:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:27,295 INFO L225 Difference]: With dead ends: 4903 [2020-10-14 21:52:27,295 INFO L226 Difference]: Without dead ends: 2624 [2020-10-14 21:52:27,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:52:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-10-14 21:52:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2601. [2020-10-14 21:52:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-10-14 21:52:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3220 transitions. [2020-10-14 21:52:27,376 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3220 transitions. Word has length 212 [2020-10-14 21:52:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:27,377 INFO L479 AbstractCegarLoop]: Abstraction has 2601 states and 3220 transitions. [2020-10-14 21:52:27,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:52:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3220 transitions. [2020-10-14 21:52:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 21:52:27,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:27,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:52:27,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:52:27,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash 640510897, now seen corresponding path program 1 times [2020-10-14 21:52:27,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:27,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478675427] [2020-10-14 21:52:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 21:52:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:52:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2886 [2020-10-14 21:52:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:30,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:52:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 21:52:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:30,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:52:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:30,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:30,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:30,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:30,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:52:30,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 21:52:30,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:30,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:52:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:52:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:52:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:52:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:52:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:30,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:52:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:52:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-14 21:52:30,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478675427] [2020-10-14 21:52:30,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:52:30,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:52:30,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897319773] [2020-10-14 21:52:30,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:52:30,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:30,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:52:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:52:30,937 INFO L87 Difference]: Start difference. First operand 2601 states and 3220 transitions. Second operand 7 states. [2020-10-14 21:52:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:39,601 INFO L93 Difference]: Finished difference Result 6215 states and 7899 transitions. [2020-10-14 21:52:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:52:39,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 21:52:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:39,634 INFO L225 Difference]: With dead ends: 6215 [2020-10-14 21:52:39,635 INFO L226 Difference]: Without dead ends: 3927 [2020-10-14 21:52:39,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:52:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-14 21:52:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3875. [2020-10-14 21:52:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3875 states. [2020-10-14 21:52:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 4642 transitions. [2020-10-14 21:52:39,762 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 4642 transitions. Word has length 215 [2020-10-14 21:52:39,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:39,763 INFO L479 AbstractCegarLoop]: Abstraction has 3875 states and 4642 transitions. [2020-10-14 21:52:39,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:52:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 4642 transitions. [2020-10-14 21:52:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 21:52:39,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:39,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:39,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:52:39,769 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:39,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1275424955, now seen corresponding path program 1 times [2020-10-14 21:52:39,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:39,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900848859] [2020-10-14 21:52:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 21:52:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:52:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 21:52:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:52:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:40,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:52:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:40,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:52:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:52:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:40,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:40,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:52:40,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:52:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:40,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 21:52:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:41,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900848859] [2020-10-14 21:52:41,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:52:41,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:52:41,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520629235] [2020-10-14 21:52:41,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:52:41,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:41,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:52:41,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:52:41,227 INFO L87 Difference]: Start difference. First operand 3875 states and 4642 transitions. Second operand 5 states. [2020-10-14 21:52:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:49,088 INFO L93 Difference]: Finished difference Result 7290 states and 8796 transitions. [2020-10-14 21:52:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:52:49,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-14 21:52:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:49,111 INFO L225 Difference]: With dead ends: 7290 [2020-10-14 21:52:49,111 INFO L226 Difference]: Without dead ends: 3876 [2020-10-14 21:52:49,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:52:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2020-10-14 21:52:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3868. [2020-10-14 21:52:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3868 states. [2020-10-14 21:52:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 4595 transitions. [2020-10-14 21:52:49,257 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 4595 transitions. Word has length 230 [2020-10-14 21:52:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:49,258 INFO L479 AbstractCegarLoop]: Abstraction has 3868 states and 4595 transitions. [2020-10-14 21:52:49,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:52:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 4595 transitions. [2020-10-14 21:52:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 21:52:49,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:49,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:49,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:52:49,264 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash 542134309, now seen corresponding path program 1 times [2020-10-14 21:52:49,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:49,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139578121] [2020-10-14 21:52:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 21:52:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:52:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-14 21:52:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:50,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:52:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-14 21:52:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:50,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:52:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:50,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:51,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:51,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:52:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 21:52:51,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:51,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:52:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:52:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 21:52:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:52,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139578121] [2020-10-14 21:52:52,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:52:52,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:52:52,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048098051] [2020-10-14 21:52:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:52:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:52:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:52:52,282 INFO L87 Difference]: Start difference. First operand 3868 states and 4595 transitions. Second operand 8 states. [2020-10-14 21:53:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:04,458 INFO L93 Difference]: Finished difference Result 7209 states and 8647 transitions. [2020-10-14 21:53:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:53:04,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-14 21:53:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:04,478 INFO L225 Difference]: With dead ends: 7209 [2020-10-14 21:53:04,478 INFO L226 Difference]: Without dead ends: 3928 [2020-10-14 21:53:04,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:53:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2020-10-14 21:53:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3876. [2020-10-14 21:53:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-10-14 21:53:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4599 transitions. [2020-10-14 21:53:04,571 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4599 transitions. Word has length 287 [2020-10-14 21:53:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:04,572 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 4599 transitions. [2020-10-14 21:53:04,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:53:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4599 transitions. [2020-10-14 21:53:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 21:53:04,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:04,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:04,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:53:04,578 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1974611905, now seen corresponding path program 1 times [2020-10-14 21:53:04,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:04,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012101131] [2020-10-14 21:53:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:07,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-14 21:53:07,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:53:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-14 21:53:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:07,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:53:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 21:53:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:07,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:07,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:53:07,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:07,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:07,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:07,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:07,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:53:07,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:07,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:07,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:53:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:07,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:53:07,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:07,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 21:53:07,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:07,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:53:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:53:08,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012101131] [2020-10-14 21:53:08,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:08,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:08,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210595323] [2020-10-14 21:53:08,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:08,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:08,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:08,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:08,116 INFO L87 Difference]: Start difference. First operand 3876 states and 4599 transitions. Second operand 7 states. [2020-10-14 21:53:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:19,764 INFO L93 Difference]: Finished difference Result 9067 states and 11116 transitions. [2020-10-14 21:53:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:53:19,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-14 21:53:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:19,790 INFO L225 Difference]: With dead ends: 9067 [2020-10-14 21:53:19,791 INFO L226 Difference]: Without dead ends: 5504 [2020-10-14 21:53:19,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:53:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2020-10-14 21:53:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5466. [2020-10-14 21:53:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5466 states. [2020-10-14 21:53:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 6368 transitions. [2020-10-14 21:53:19,930 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 6368 transitions. Word has length 307 [2020-10-14 21:53:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:19,931 INFO L479 AbstractCegarLoop]: Abstraction has 5466 states and 6368 transitions. [2020-10-14 21:53:19,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 6368 transitions. [2020-10-14 21:53:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 21:53:19,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:19,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:19,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:53:19,940 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash -768902911, now seen corresponding path program 1 times [2020-10-14 21:53:19,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:19,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676634316] [2020-10-14 21:53:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:20,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:20,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 21:53:20,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:20,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-10-14 21:53:20,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:20,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:20,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:53:20,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:53:20,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:21,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:21,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:53:21,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:21,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:53:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 21:53:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:21,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:53:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:53:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:53:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:53:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:21,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:53:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:53:22,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676634316] [2020-10-14 21:53:22,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:22,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:53:22,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080481035] [2020-10-14 21:53:22,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:22,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:22,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:22,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:22,422 INFO L87 Difference]: Start difference. First operand 5466 states and 6368 transitions. Second operand 8 states. [2020-10-14 21:53:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:34,764 INFO L93 Difference]: Finished difference Result 12253 states and 14750 transitions. [2020-10-14 21:53:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:53:34,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-10-14 21:53:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:34,793 INFO L225 Difference]: With dead ends: 12253 [2020-10-14 21:53:34,793 INFO L226 Difference]: Without dead ends: 7100 [2020-10-14 21:53:34,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:53:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2020-10-14 21:53:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 7048. [2020-10-14 21:53:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-14 21:53:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 8083 transitions. [2020-10-14 21:53:34,957 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 8083 transitions. Word has length 393 [2020-10-14 21:53:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:34,958 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 8083 transitions. [2020-10-14 21:53:34,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:53:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 8083 transitions. [2020-10-14 21:53:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 21:53:34,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:34,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:34,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:53:34,969 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:34,969 INFO L82 PathProgramCache]: Analyzing trace with hash 468674489, now seen corresponding path program 1 times [2020-10-14 21:53:34,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:34,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419337399] [2020-10-14 21:53:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:37,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:37,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 21:53:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2118 [2020-10-14 21:53:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:37,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:53:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:53:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 21:53:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:37,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:37,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:37,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:53:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:37,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:37,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:53:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 21:53:37,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:37,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:53:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:53:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:38,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:38,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:53:38,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:38,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:53:38,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:38,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:53:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:53:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:53:38,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419337399] [2020-10-14 21:53:38,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:38,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:53:38,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606084938] [2020-10-14 21:53:38,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:38,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:38,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:38,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:38,260 INFO L87 Difference]: Start difference. First operand 7048 states and 8083 transitions. Second operand 8 states. [2020-10-14 21:54:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:03,869 INFO L93 Difference]: Finished difference Result 19303 states and 23270 transitions. [2020-10-14 21:54:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:54:03,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-14 21:54:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:03,919 INFO L225 Difference]: With dead ends: 19303 [2020-10-14 21:54:03,919 INFO L226 Difference]: Without dead ends: 12248 [2020-10-14 21:54:03,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:54:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2020-10-14 21:54:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 10292. [2020-10-14 21:54:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10292 states. [2020-10-14 21:54:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10292 states to 10292 states and 12333 transitions. [2020-10-14 21:54:04,225 INFO L78 Accepts]: Start accepts. Automaton has 10292 states and 12333 transitions. Word has length 405 [2020-10-14 21:54:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:04,226 INFO L479 AbstractCegarLoop]: Abstraction has 10292 states and 12333 transitions. [2020-10-14 21:54:04,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:54:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 10292 states and 12333 transitions. [2020-10-14 21:54:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-14 21:54:04,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:04,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:04,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:54:04,234 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash 845141974, now seen corresponding path program 1 times [2020-10-14 21:54:04,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:04,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321816880] [2020-10-14 21:54:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-14 21:54:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2568 [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:54:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:54:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:07,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:07,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:54:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 21:54:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:07,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:54:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:54:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:07,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:07,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:54:07,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:54:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:54:07,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321816880] [2020-10-14 21:54:07,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:07,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:07,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100387964] [2020-10-14 21:54:07,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:07,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:07,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:07,872 INFO L87 Difference]: Start difference. First operand 10292 states and 12333 transitions. Second operand 7 states. [2020-10-14 21:54:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:24,215 INFO L93 Difference]: Finished difference Result 22668 states and 28672 transitions. [2020-10-14 21:54:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:54:24,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 416 [2020-10-14 21:54:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:24,295 INFO L225 Difference]: With dead ends: 22668 [2020-10-14 21:54:24,295 INFO L226 Difference]: Without dead ends: 12689 [2020-10-14 21:54:24,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:54:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12689 states. [2020-10-14 21:54:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12689 to 12527. [2020-10-14 21:54:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12527 states. [2020-10-14 21:54:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12527 states to 12527 states and 14773 transitions. [2020-10-14 21:54:24,688 INFO L78 Accepts]: Start accepts. Automaton has 12527 states and 14773 transitions. Word has length 416 [2020-10-14 21:54:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:24,689 INFO L479 AbstractCegarLoop]: Abstraction has 12527 states and 14773 transitions. [2020-10-14 21:54:24,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 12527 states and 14773 transitions. [2020-10-14 21:54:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-14 21:54:24,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:24,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:24,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:54:24,699 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:24,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1463312848, now seen corresponding path program 1 times [2020-10-14 21:54:24,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:24,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557560095] [2020-10-14 21:54:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-14 21:54:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-14 21:54:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:25,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:54:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 21:54:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:26,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:54:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:26,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:54:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:54:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 21:54:26,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:26,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:54:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:54:26,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557560095] [2020-10-14 21:54:26,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:26,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:54:26,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349692474] [2020-10-14 21:54:26,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:54:26,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:26,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:54:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:54:26,856 INFO L87 Difference]: Start difference. First operand 12527 states and 14773 transitions. Second operand 6 states. [2020-10-14 21:54:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:41,598 INFO L93 Difference]: Finished difference Result 28465 states and 34528 transitions. [2020-10-14 21:54:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:54:41,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 447 [2020-10-14 21:54:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:41,653 INFO L225 Difference]: With dead ends: 28465 [2020-10-14 21:54:41,654 INFO L226 Difference]: Without dead ends: 16251 [2020-10-14 21:54:41,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:54:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2020-10-14 21:54:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 15914. [2020-10-14 21:54:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15914 states. [2020-10-14 21:54:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15914 states to 15914 states and 18821 transitions. [2020-10-14 21:54:42,069 INFO L78 Accepts]: Start accepts. Automaton has 15914 states and 18821 transitions. Word has length 447 [2020-10-14 21:54:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:42,070 INFO L479 AbstractCegarLoop]: Abstraction has 15914 states and 18821 transitions. [2020-10-14 21:54:42,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:54:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15914 states and 18821 transitions. [2020-10-14 21:54:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-14 21:54:42,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:42,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:42,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:54:42,080 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2110453868, now seen corresponding path program 1 times [2020-10-14 21:54:42,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:42,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247606952] [2020-10-14 21:54:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:44,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 21:54:44,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2374 [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 21:54:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:44,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:44,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:54:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:45,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:45,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:54:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:45,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:45,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:54:45,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 21:54:45,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:54:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:54:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:45,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:45,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:54:45,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 21:54:45,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:45,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:54:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 220 proven. 44 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:54:45,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247606952] [2020-10-14 21:54:45,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:45,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:45,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274315087] [2020-10-14 21:54:45,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:45,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:45,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:45,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:45,876 INFO L87 Difference]: Start difference. First operand 15914 states and 18821 transitions. Second operand 7 states. [2020-10-14 21:55:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:08,528 INFO L93 Difference]: Finished difference Result 32324 states and 39779 transitions. [2020-10-14 21:55:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:55:08,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-14 21:55:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:08,597 INFO L225 Difference]: With dead ends: 32324 [2020-10-14 21:55:08,598 INFO L226 Difference]: Without dead ends: 21078 [2020-10-14 21:55:08,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21078 states. [2020-10-14 21:55:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21078 to 21047. [2020-10-14 21:55:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21047 states. [2020-10-14 21:55:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21047 states to 21047 states and 25549 transitions. [2020-10-14 21:55:09,188 INFO L78 Accepts]: Start accepts. Automaton has 21047 states and 25549 transitions. Word has length 516 [2020-10-14 21:55:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:09,189 INFO L479 AbstractCegarLoop]: Abstraction has 21047 states and 25549 transitions. [2020-10-14 21:55:09,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 21047 states and 25549 transitions. [2020-10-14 21:55:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-14 21:55:09,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:09,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:09,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:55:09,199 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:09,200 INFO L82 PathProgramCache]: Analyzing trace with hash 213042783, now seen corresponding path program 1 times [2020-10-14 21:55:09,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:09,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14708448] [2020-10-14 21:55:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:11,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:12,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 539 [2020-10-14 21:55:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-10-14 21:55:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:12,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:55:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1