/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:20,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:20,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:20,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:20,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:20,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:20,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:20,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:20,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:20,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:20,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:20,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:20,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:20,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:20,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:20,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:20,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:20,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:20,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:20,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:20,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:20,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:20,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:20,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:20,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:20,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:20,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:20,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:20,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:20,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:20,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:20,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:20,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:20,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:20,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:20,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:20,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:20,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:20,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:20,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:20,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:20,152 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 [2020-09-24 19:30:20,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:20,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:20,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:20,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:20,179 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:20,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:20,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:20,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:20,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:20,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:20,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:20,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:20,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:20,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:20,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:20,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:20,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:20,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:20,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:20,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:20,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:20,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:20,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:20,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:20,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:20,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:20,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:20,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:20,184 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:20,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:20,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:20,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:20,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:20,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:20,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-24 19:30:20,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2e5b03f/51175d7676f141f09ceee2d71c221cad/FLAG7daf6ac74 [2020-09-24 19:30:21,494 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:21,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-24 19:30:21,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2e5b03f/51175d7676f141f09ceee2d71c221cad/FLAG7daf6ac74 [2020-09-24 19:30:21,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2e5b03f/51175d7676f141f09ceee2d71c221cad [2020-09-24 19:30:21,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:21,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:21,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:21,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:21,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:21,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:21" (1/1) ... [2020-09-24 19:30:21,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:21, skipping insertion in model container [2020-09-24 19:30:21,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:21" (1/1) ... [2020-09-24 19:30:21,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:21,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:22,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:22,653 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:22,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:22,988 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:22,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22 WrapperNode [2020-09-24 19:30:22,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:22,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:22,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:22,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:23,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... [2020-09-24 19:30:23,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:23,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:23,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:23,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:23,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:23,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:23,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:25,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:25,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:25,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:25 BoogieIcfgContainer [2020-09-24 19:30:25,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:25,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:25,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:25,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:25,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:21" (1/3) ... [2020-09-24 19:30:25,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:25, skipping insertion in model container [2020-09-24 19:30:25,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:22" (2/3) ... [2020-09-24 19:30:25,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:25, skipping insertion in model container [2020-09-24 19:30:25,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:25" (3/3) ... [2020-09-24 19:30:25,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-24 19:30:25,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:25,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:26,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:26,060 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:26,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:26,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:26,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:26,061 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:26,061 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:26,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:26,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:26,103 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-24 19:30:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 19:30:26,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:26,117 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] [2020-09-24 19:30:26,118 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-24 19:30:26,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:26,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304820978] [2020-09-24 19:30:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:30:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-09-24 19:30:27,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:30:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:30:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:30:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:30:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:27,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304820978] [2020-09-24 19:30:27,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:27,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:27,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092377966] [2020-09-24 19:30:27,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:27,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:27,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:27,549 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-24 19:30:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:32,171 INFO L93 Difference]: Finished difference Result 2039 states and 2640 transitions. [2020-09-24 19:30:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:32,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 19:30:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:32,208 INFO L225 Difference]: With dead ends: 2039 [2020-09-24 19:30:32,208 INFO L226 Difference]: Without dead ends: 1170 [2020-09-24 19:30:32,226 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 [2020-09-24 19:30:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-24 19:30:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 959. [2020-09-24 19:30:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-09-24 19:30:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1158 transitions. [2020-09-24 19:30:32,350 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1158 transitions. Word has length 34 [2020-09-24 19:30:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:32,351 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1158 transitions. [2020-09-24 19:30:32,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1158 transitions. [2020-09-24 19:30:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 19:30:32,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:32,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:32,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:32,358 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash 110158416, now seen corresponding path program 1 times [2020-09-24 19:30:32,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:32,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077476281] [2020-09-24 19:30:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 19:30:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:30:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:30:33,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 19:30:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:30:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:33,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:30:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:30:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:33,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 19:30:33,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 19:30:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:33,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077476281] [2020-09-24 19:30:33,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:33,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:33,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151734857] [2020-09-24 19:30:33,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:33,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:33,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:33,865 INFO L87 Difference]: Start difference. First operand 959 states and 1158 transitions. Second operand 5 states. [2020-09-24 19:30:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:37,751 INFO L93 Difference]: Finished difference Result 2328 states and 2933 transitions. [2020-09-24 19:30:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:37,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-09-24 19:30:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:37,760 INFO L225 Difference]: With dead ends: 2328 [2020-09-24 19:30:37,760 INFO L226 Difference]: Without dead ends: 1386 [2020-09-24 19:30:37,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-09-24 19:30:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1364. [2020-09-24 19:30:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-09-24 19:30:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1646 transitions. [2020-09-24 19:30:37,814 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1646 transitions. Word has length 115 [2020-09-24 19:30:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:37,815 INFO L479 AbstractCegarLoop]: Abstraction has 1364 states and 1646 transitions. [2020-09-24 19:30:37,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1646 transitions. [2020-09-24 19:30:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 19:30:37,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:37,820 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:30:37,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:37,820 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-24 19:30:37,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:37,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449070721] [2020-09-24 19:30:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 19:30:38,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:30:38,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 19:30:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:30:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:38,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:39,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:30:39,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:30:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:30:39,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:30:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:39,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449070721] [2020-09-24 19:30:39,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:39,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:39,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54069996] [2020-09-24 19:30:39,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:39,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:39,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:39,222 INFO L87 Difference]: Start difference. First operand 1364 states and 1646 transitions. Second operand 5 states. [2020-09-24 19:30:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:43,760 INFO L93 Difference]: Finished difference Result 3274 states and 4048 transitions. [2020-09-24 19:30:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:43,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-24 19:30:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:43,781 INFO L225 Difference]: With dead ends: 3274 [2020-09-24 19:30:43,781 INFO L226 Difference]: Without dead ends: 1927 [2020-09-24 19:30:43,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-09-24 19:30:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1755. [2020-09-24 19:30:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-24 19:30:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2132 transitions. [2020-09-24 19:30:43,870 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2132 transitions. Word has length 123 [2020-09-24 19:30:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:43,873 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2132 transitions. [2020-09-24 19:30:43,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2132 transitions. [2020-09-24 19:30:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 19:30:43,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:43,892 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:30:43,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:43,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash 117839670, now seen corresponding path program 1 times [2020-09-24 19:30:43,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:43,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853173630] [2020-09-24 19:30:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:44,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 19:30:44,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:30:44,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-09-24 19:30:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:30:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:30:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:45,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:30:45,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:30:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 19:30:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 19:30:45,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:30:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:45,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853173630] [2020-09-24 19:30:45,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:45,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:45,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354098584] [2020-09-24 19:30:45,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:45,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:45,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:45,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:45,289 INFO L87 Difference]: Start difference. First operand 1755 states and 2132 transitions. Second operand 5 states. [2020-09-24 19:30:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:49,626 INFO L93 Difference]: Finished difference Result 4358 states and 5417 transitions. [2020-09-24 19:30:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-24 19:30:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:49,648 INFO L225 Difference]: With dead ends: 4358 [2020-09-24 19:30:49,649 INFO L226 Difference]: Without dead ends: 2620 [2020-09-24 19:30:49,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-09-24 19:30:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2425. [2020-09-24 19:30:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-09-24 19:30:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2991 transitions. [2020-09-24 19:30:49,770 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2991 transitions. Word has length 133 [2020-09-24 19:30:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:49,772 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 2991 transitions. [2020-09-24 19:30:49,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2991 transitions. [2020-09-24 19:30:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 19:30:49,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:49,777 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:30:49,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:49,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1293143201, now seen corresponding path program 1 times [2020-09-24 19:30:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17534041] [2020-09-24 19:30:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:50,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 19:30:50,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-24 19:30:50,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 19:30:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:30:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:30:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 19:30:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 19:30:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 19:30:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:51,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17534041] [2020-09-24 19:30:51,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:51,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:51,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25621733] [2020-09-24 19:30:51,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:51,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:51,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:51,378 INFO L87 Difference]: Start difference. First operand 2425 states and 2991 transitions. Second operand 5 states. [2020-09-24 19:30:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:55,593 INFO L93 Difference]: Finished difference Result 6506 states and 8269 transitions. [2020-09-24 19:30:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:55,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-24 19:30:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:55,618 INFO L225 Difference]: With dead ends: 6506 [2020-09-24 19:30:55,618 INFO L226 Difference]: Without dead ends: 4098 [2020-09-24 19:30:55,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-09-24 19:30:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4048. [2020-09-24 19:30:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2020-09-24 19:30:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5132 transitions. [2020-09-24 19:30:55,803 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5132 transitions. Word has length 187 [2020-09-24 19:30:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:55,803 INFO L479 AbstractCegarLoop]: Abstraction has 4048 states and 5132 transitions. [2020-09-24 19:30:55,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5132 transitions. [2020-09-24 19:30:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 19:30:55,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:55,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:55,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:55,810 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2065876718, now seen corresponding path program 1 times [2020-09-24 19:30:55,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:55,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121893402] [2020-09-24 19:30:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-24 19:30:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-24 19:30:56,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:30:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 19:30:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:30:56,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:30:56,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:30:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:30:57,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:30:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 19:30:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:30:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 19:30:57,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:30:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:57,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121893402] [2020-09-24 19:30:57,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:57,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:57,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675647839] [2020-09-24 19:30:57,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:57,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:57,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:57,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:57,421 INFO L87 Difference]: Start difference. First operand 4048 states and 5132 transitions. Second operand 7 states. [2020-09-24 19:31:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:03,631 INFO L93 Difference]: Finished difference Result 9530 states and 12447 transitions. [2020-09-24 19:31:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:03,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-09-24 19:31:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:03,657 INFO L225 Difference]: With dead ends: 9530 [2020-09-24 19:31:03,657 INFO L226 Difference]: Without dead ends: 5499 [2020-09-24 19:31:03,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2020-09-24 19:31:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5347. [2020-09-24 19:31:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5347 states. [2020-09-24 19:31:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 6834 transitions. [2020-09-24 19:31:03,809 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 6834 transitions. Word has length 202 [2020-09-24 19:31:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:03,809 INFO L479 AbstractCegarLoop]: Abstraction has 5347 states and 6834 transitions. [2020-09-24 19:31:03,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 6834 transitions. [2020-09-24 19:31:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:31:03,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:03,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:03,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:03,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash -512726209, now seen corresponding path program 1 times [2020-09-24 19:31:03,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:03,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500154841] [2020-09-24 19:31:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:04,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 19:31:04,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:31:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:31:04,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-24 19:31:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:31:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:04,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:31:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:31:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 19:31:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:31:05,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:31:05,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:05,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:31:05,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 19:31:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 19:31:05,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 19:31:05,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:31:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:05,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500154841] [2020-09-24 19:31:05,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:05,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:05,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774444979] [2020-09-24 19:31:05,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:05,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:05,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:05,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:05,688 INFO L87 Difference]: Start difference. First operand 5347 states and 6834 transitions. Second operand 7 states.