/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:35,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:35,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:35,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:35,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:35,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:35,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:35,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:35,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:35,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:35,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:35,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:35,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:35,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:35,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:35,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:35,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:35,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:35,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:35,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:35,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:35,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:35,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:35,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:35,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:35,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:35,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:35,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:35,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:35,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:35,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:35,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:35,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:35,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:35,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:35,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:35,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:35,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:35,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:35,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:35,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:35,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:35:35,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:35,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:35,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:35,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:35,184 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:35,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:35,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:35,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:35,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:35,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:35,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:35,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:35,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:35,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:35,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:35,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:35,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:35,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:35,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:35,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:35,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:35,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:35,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:35,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:35,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:35,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:35,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:35,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:35,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:35,713 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:35,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 13:35:35,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866eede45/a5aa9e13bd6f4acd8ef9b65f51167cc3/FLAG936d388be [2020-09-25 13:35:36,466 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:36,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 13:35:36,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866eede45/a5aa9e13bd6f4acd8ef9b65f51167cc3/FLAG936d388be [2020-09-25 13:35:36,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866eede45/a5aa9e13bd6f4acd8ef9b65f51167cc3 [2020-09-25 13:35:36,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:36,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:36,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:36,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:36,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:36,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:36" (1/1) ... [2020-09-25 13:35:36,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:36, skipping insertion in model container [2020-09-25 13:35:36,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:36" (1/1) ... [2020-09-25 13:35:36,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:36,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:37,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:37,405 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:37,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:37,629 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:37,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37 WrapperNode [2020-09-25 13:35:37,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:37,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:37,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:37,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:37,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... [2020-09-25 13:35:37,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:37,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:37,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:37,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:37,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:39,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:39,602 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:39,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:39 BoogieIcfgContainer [2020-09-25 13:35:39,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:39,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:39,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:39,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:39,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:36" (1/3) ... [2020-09-25 13:35:39,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37212ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:39, skipping insertion in model container [2020-09-25 13:35:39,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:37" (2/3) ... [2020-09-25 13:35:39,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37212ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:39, skipping insertion in model container [2020-09-25 13:35:39,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:39" (3/3) ... [2020-09-25 13:35:39,627 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 13:35:39,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:39,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:39,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:39,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:39,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:39,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:39,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:39,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:39,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:39,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:39,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 13:35:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:35:39,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:39,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:39,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:39,772 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 13:35:39,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:39,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565388685] [2020-09-25 13:35:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:40,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:35:40,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 13:35:40,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:40,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:35:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:40,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:40,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:35:40,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:40,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:40,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565388685] [2020-09-25 13:35:40,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:40,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:40,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241956251] [2020-09-25 13:35:40,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:40,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:41,022 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 13:35:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:43,925 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 13:35:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:43,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 13:35:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:43,962 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 13:35:43,962 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 13:35:43,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 13:35:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 13:35:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 13:35:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 13:35:44,085 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 73 [2020-09-25 13:35:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:44,086 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 13:35:44,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 13:35:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 13:35:44,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:44,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:44,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:44,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:44,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1576204144, now seen corresponding path program 1 times [2020-09-25 13:35:44,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:44,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124057483] [2020-09-25 13:35:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:49,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:35:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:35:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:49,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:35:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:35:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:49,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:49,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:35:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:49,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-25 13:35:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:50,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124057483] [2020-09-25 13:35:50,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:50,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:35:50,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995568347] [2020-09-25 13:35:50,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:35:50,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:50,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:35:50,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:35:50,311 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 9 states. [2020-09-25 13:35:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:54,725 INFO L93 Difference]: Finished difference Result 2155 states and 2756 transitions. [2020-09-25 13:35:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:54,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-25 13:35:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:54,737 INFO L225 Difference]: With dead ends: 2155 [2020-09-25 13:35:54,738 INFO L226 Difference]: Without dead ends: 1364 [2020-09-25 13:35:54,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-09-25 13:35:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1283. [2020-09-25 13:35:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-09-25 13:35:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1518 transitions. [2020-09-25 13:35:54,831 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1518 transitions. Word has length 152 [2020-09-25 13:35:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:54,835 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 1518 transitions. [2020-09-25 13:35:54,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:35:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1518 transitions. [2020-09-25 13:35:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:35:54,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:54,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:54,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:54,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:54,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2132195680, now seen corresponding path program 1 times [2020-09-25 13:35:54,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:54,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052135434] [2020-09-25 13:35:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:35:59,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:35:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:59,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:35:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:59,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:59,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:00,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:36:00,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 13:36:00,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:00,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:36:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:00,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052135434] [2020-09-25 13:36:00,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:00,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:00,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94348677] [2020-09-25 13:36:00,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:00,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:00,235 INFO L87 Difference]: Start difference. First operand 1283 states and 1518 transitions. Second operand 7 states. [2020-09-25 13:36:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:03,948 INFO L93 Difference]: Finished difference Result 3238 states and 3932 transitions. [2020-09-25 13:36:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:03,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 13:36:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:03,959 INFO L225 Difference]: With dead ends: 3238 [2020-09-25 13:36:03,960 INFO L226 Difference]: Without dead ends: 1970 [2020-09-25 13:36:03,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2020-09-25 13:36:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1838. [2020-09-25 13:36:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-09-25 13:36:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2164 transitions. [2020-09-25 13:36:04,014 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2164 transitions. Word has length 156 [2020-09-25 13:36:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:04,014 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 2164 transitions. [2020-09-25 13:36:04,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2164 transitions. [2020-09-25 13:36:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:36:04,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:04,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:04,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:04,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1211602231, now seen corresponding path program 1 times [2020-09-25 13:36:04,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:04,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671254272] [2020-09-25 13:36:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:04,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 13:36:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:36:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-09-25 13:36:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:36:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 13:36:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:36:06,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:36:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:36:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 13:36:06,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 13:36:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:06,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671254272] [2020-09-25 13:36:06,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:06,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:06,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976933913] [2020-09-25 13:36:06,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:06,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:06,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:06,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:06,831 INFO L87 Difference]: Start difference. First operand 1838 states and 2164 transitions. Second operand 10 states. [2020-09-25 13:36:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:10,619 INFO L93 Difference]: Finished difference Result 3317 states and 3940 transitions. [2020-09-25 13:36:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:36:10,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-25 13:36:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:10,629 INFO L225 Difference]: With dead ends: 3317 [2020-09-25 13:36:10,629 INFO L226 Difference]: Without dead ends: 1614 [2020-09-25 13:36:10,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:36:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-09-25 13:36:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1600. [2020-09-25 13:36:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-09-25 13:36:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 1871 transitions. [2020-09-25 13:36:10,673 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 1871 transitions. Word has length 166 [2020-09-25 13:36:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:10,674 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 1871 transitions. [2020-09-25 13:36:10,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:36:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 1871 transitions. [2020-09-25 13:36:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 13:36:10,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:10,678 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:10,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:10,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1930234139, now seen corresponding path program 1 times [2020-09-25 13:36:10,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:10,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093138465] [2020-09-25 13:36:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-25 13:36:15,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:36:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 13:36:15,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:15,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-09-25 13:36:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:15,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:36:15,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:15,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:15,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:36:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:16,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 13:36:16,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 13:36:16,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:16,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:36:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:16,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 13:36:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:16,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:36:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:36:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:16,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:36:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:16,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093138465] [2020-09-25 13:36:16,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:16,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:16,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9990599] [2020-09-25 13:36:16,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:16,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:16,726 INFO L87 Difference]: Start difference. First operand 1600 states and 1871 transitions. Second operand 10 states. [2020-09-25 13:36:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:21,387 INFO L93 Difference]: Finished difference Result 3003 states and 3562 transitions. [2020-09-25 13:36:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:36:21,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-09-25 13:36:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:21,394 INFO L225 Difference]: With dead ends: 3003 [2020-09-25 13:36:21,395 INFO L226 Difference]: Without dead ends: 1607 [2020-09-25 13:36:21,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:36:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-25 13:36:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1576. [2020-09-25 13:36:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-09-25 13:36:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1835 transitions. [2020-09-25 13:36:21,458 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1835 transitions. Word has length 274 [2020-09-25 13:36:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:21,460 INFO L479 AbstractCegarLoop]: Abstraction has 1576 states and 1835 transitions. [2020-09-25 13:36:21,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:36:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1835 transitions. [2020-09-25 13:36:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-09-25 13:36:21,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:21,473 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:21,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:21,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash 419469507, now seen corresponding path program 1 times [2020-09-25 13:36:21,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:21,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831060856] [2020-09-25 13:36:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking...