/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:18:28,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:18:29,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:18:29,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:18:29,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:18:29,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:18:29,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:18:29,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:18:29,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:18:29,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:18:29,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:18:29,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:18:29,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:18:29,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:18:29,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:18:29,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:18:29,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:18:29,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:18:29,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:18:29,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:18:29,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:18:29,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:18:29,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:18:29,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:18:29,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:18:29,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:18:29,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:18:29,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:18:29,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:18:29,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:18:29,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:18:29,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:18:29,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:18:29,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:18:29,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:18:29,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:18:29,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:18:29,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:18:29,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:18:29,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:18:29,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:18:29,131 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 12:18:29,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:18:29,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:18:29,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:18:29,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:18:29,177 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:18:29,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:18:29,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:18:29,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:18:29,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:18:29,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:18:29,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:18:29,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:18:29,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:18:29,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:18:29,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:18:29,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:18:29,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:18:29,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:18:29,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:18:29,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:18:29,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:18:29,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:18:29,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:18:29,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:18:29,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:18:29,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:18:29,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:18:29,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:18:29,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:18:29,183 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:18:29,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:18:29,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:18:29,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:18:29,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:18:29,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:18:29,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 12:18:29,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c71b06e4/cb065319607e4a91a6a50d6559f08f80/FLAG8d258ceaf [2020-09-25 12:18:30,442 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:18:30,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 12:18:30,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c71b06e4/cb065319607e4a91a6a50d6559f08f80/FLAG8d258ceaf [2020-09-25 12:18:30,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c71b06e4/cb065319607e4a91a6a50d6559f08f80 [2020-09-25 12:18:30,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:18:30,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:18:30,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:30,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:18:30,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:18:30,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:30" (1/1) ... [2020-09-25 12:18:30,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:30, skipping insertion in model container [2020-09-25 12:18:30,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:30" (1/1) ... [2020-09-25 12:18:30,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:18:30,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:18:31,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:31,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:18:31,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:31,115 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:18:31,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31 WrapperNode [2020-09-25 12:18:31,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:31,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:18:31,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:18:31,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:18:31,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (1/1) ... [2020-09-25 12:18:31,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:18:31,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:18:31,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:18:31,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:18:31,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (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 12:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:18:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:18:31,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:18:31,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:18:31,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:31 BoogieIcfgContainer [2020-09-25 12:18:31,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:18:31,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:18:31,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:18:31,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:18:31,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:18:30" (1/3) ... [2020-09-25 12:18:31,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742dc903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:31, skipping insertion in model container [2020-09-25 12:18:31,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:31" (2/3) ... [2020-09-25 12:18:31,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742dc903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:31, skipping insertion in model container [2020-09-25 12:18:31,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:31" (3/3) ... [2020-09-25 12:18:31,754 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-25 12:18:31,778 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:18:31,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:18:31,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:18:31,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:18:31,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:18:31,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:18:31,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:18:31,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:18:31,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:18:31,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:18:31,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:18:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-09-25 12:18:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:18:31,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:31,909 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 12:18:31,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash -74913912, now seen corresponding path program 1 times [2020-09-25 12:18:31,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:31,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784993537] [2020-09-25 12:18:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:18:32,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 12:18:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 12:18:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:18:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:18:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,514 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 12:18:32,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784993537] [2020-09-25 12:18:32,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:32,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:32,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164717131] [2020-09-25 12:18:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:32,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,549 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-09-25 12:18:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:32,638 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2020-09-25 12:18:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:32,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 12:18:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:32,659 INFO L225 Difference]: With dead ends: 257 [2020-09-25 12:18:32,659 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 12:18:32,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 12:18:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-09-25 12:18:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 12:18:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-09-25 12:18:32,733 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 73 [2020-09-25 12:18:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:32,734 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-09-25 12:18:32,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-09-25 12:18:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 12:18:32,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:32,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:32,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:18:32,740 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:32,740 INFO L82 PathProgramCache]: Analyzing trace with hash 328701044, now seen corresponding path program 1 times [2020-09-25 12:18:32,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:32,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715606653] [2020-09-25 12:18:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:18:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 12:18:32,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 12:18:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:32,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,986 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 12:18:32,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715606653] [2020-09-25 12:18:32,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:32,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:32,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723434014] [2020-09-25 12:18:32,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:32,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:32,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,991 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 3 states. [2020-09-25 12:18:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,021 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-09-25 12:18:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 12:18:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,028 INFO L225 Difference]: With dead ends: 211 [2020-09-25 12:18:33,028 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 12:18:33,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 12:18:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2020-09-25 12:18:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 12:18:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2020-09-25 12:18:33,051 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 74 [2020-09-25 12:18:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,052 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2020-09-25 12:18:33,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2020-09-25 12:18:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 12:18:33,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:18:33,066 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1972879950, now seen corresponding path program 1 times [2020-09-25 12:18:33,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042952569] [2020-09-25 12:18:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:18:33,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 12:18:33,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 12:18:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:18:33,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,258 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 12:18:33,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042952569] [2020-09-25 12:18:33,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:33,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:33,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465861142] [2020-09-25 12:18:33,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:33,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:33,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,263 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand 3 states. [2020-09-25 12:18:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,315 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2020-09-25 12:18:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 12:18:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,319 INFO L225 Difference]: With dead ends: 426 [2020-09-25 12:18:33,319 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 12:18:33,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 12:18:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-09-25 12:18:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 12:18:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2020-09-25 12:18:33,347 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 74 [2020-09-25 12:18:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,347 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2020-09-25 12:18:33,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2020-09-25 12:18:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 12:18:33,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:18:33,350 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash -618815907, now seen corresponding path program 1 times [2020-09-25 12:18:33,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975530610] [2020-09-25 12:18:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:18:33,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 12:18:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 12:18:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,467 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 12:18:33,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975530610] [2020-09-25 12:18:33,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:33,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:33,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659704373] [2020-09-25 12:18:33,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:33,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:33,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:33,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,470 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand 3 states. [2020-09-25 12:18:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,488 INFO L93 Difference]: Finished difference Result 361 states and 496 transitions. [2020-09-25 12:18:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 12:18:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,492 INFO L225 Difference]: With dead ends: 361 [2020-09-25 12:18:33,492 INFO L226 Difference]: Without dead ends: 359 [2020-09-25 12:18:33,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-09-25 12:18:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2020-09-25 12:18:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 12:18:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 398 transitions. [2020-09-25 12:18:33,505 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 398 transitions. Word has length 75 [2020-09-25 12:18:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,506 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 398 transitions. [2020-09-25 12:18:33,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 398 transitions. [2020-09-25 12:18:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 12:18:33,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:18:33,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1029980604, now seen corresponding path program 1 times [2020-09-25 12:18:33,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218902163] [2020-09-25 12:18:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:18:33,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 12:18:33,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 12:18:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:33,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,626 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 12:18:33,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218902163] [2020-09-25 12:18:33,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:33,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:33,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435698060] [2020-09-25 12:18:33,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:33,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:33,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:33,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,630 INFO L87 Difference]: Start difference. First operand 295 states and 398 transitions. Second operand 3 states. [2020-09-25 12:18:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,667 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2020-09-25 12:18:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 12:18:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,673 INFO L225 Difference]: With dead ends: 783 [2020-09-25 12:18:33,674 INFO L226 Difference]: Without dead ends: 533 [2020-09-25 12:18:33,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-25 12:18:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2020-09-25 12:18:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 12:18:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 726 transitions. [2020-09-25 12:18:33,705 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 726 transitions. Word has length 75 [2020-09-25 12:18:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,705 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 726 transitions. [2020-09-25 12:18:33,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 726 transitions. [2020-09-25 12:18:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:18:33,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:18:33,714 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash 72930056, now seen corresponding path program 1 times [2020-09-25 12:18:33,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828191732] [2020-09-25 12:18:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:18:33,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:18:33,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 12:18:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:33,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,853 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 12:18:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828191732] [2020-09-25 12:18:33,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:33,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:33,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338292145] [2020-09-25 12:18:33,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:33,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:33,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:33,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,861 INFO L87 Difference]: Start difference. First operand 531 states and 726 transitions. Second operand 3 states. [2020-09-25 12:18:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,894 INFO L93 Difference]: Finished difference Result 651 states and 900 transitions. [2020-09-25 12:18:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 12:18:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,899 INFO L225 Difference]: With dead ends: 651 [2020-09-25 12:18:33,899 INFO L226 Difference]: Without dead ends: 649 [2020-09-25 12:18:33,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-09-25 12:18:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 531. [2020-09-25 12:18:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 12:18:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 722 transitions. [2020-09-25 12:18:33,925 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 722 transitions. Word has length 76 [2020-09-25 12:18:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,927 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 722 transitions. [2020-09-25 12:18:33,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 722 transitions. [2020-09-25 12:18:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:18:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:18:33,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1864872322, now seen corresponding path program 1 times [2020-09-25 12:18:33,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297303333] [2020-09-25 12:18:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:18:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:18:34,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 12:18:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:34,055 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 12:18:34,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297303333] [2020-09-25 12:18:34,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:34,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554369509] [2020-09-25 12:18:34,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:34,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:34,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,059 INFO L87 Difference]: Start difference. First operand 531 states and 722 transitions. Second operand 3 states. [2020-09-25 12:18:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:34,096 INFO L93 Difference]: Finished difference Result 1479 states and 2044 transitions. [2020-09-25 12:18:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:34,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 12:18:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:34,103 INFO L225 Difference]: With dead ends: 1479 [2020-09-25 12:18:34,103 INFO L226 Difference]: Without dead ends: 993 [2020-09-25 12:18:34,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-09-25 12:18:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2020-09-25 12:18:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-25 12:18:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1350 transitions. [2020-09-25 12:18:34,146 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1350 transitions. Word has length 76 [2020-09-25 12:18:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:34,146 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1350 transitions. [2020-09-25 12:18:34,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1350 transitions. [2020-09-25 12:18:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 12:18:34,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:34,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:34,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:18:34,149 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:34,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1976712176, now seen corresponding path program 1 times [2020-09-25 12:18:34,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:34,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520292305] [2020-09-25 12:18:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 12:18:34,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:18:34,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 12:18:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:34,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,253 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 12:18:34,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520292305] [2020-09-25 12:18:34,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:34,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703574066] [2020-09-25 12:18:34,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:34,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,256 INFO L87 Difference]: Start difference. First operand 991 states and 1350 transitions. Second operand 3 states. [2020-09-25 12:18:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:34,318 INFO L93 Difference]: Finished difference Result 2835 states and 3896 transitions. [2020-09-25 12:18:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:34,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 12:18:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:34,332 INFO L225 Difference]: With dead ends: 2835 [2020-09-25 12:18:34,332 INFO L226 Difference]: Without dead ends: 1889 [2020-09-25 12:18:34,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-25 12:18:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2020-09-25 12:18:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 12:18:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2020-09-25 12:18:34,397 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 77 [2020-09-25 12:18:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:34,398 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2020-09-25 12:18:34,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2020-09-25 12:18:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 12:18:34,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:34,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:34,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:18:34,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:34,404 INFO L82 PathProgramCache]: Analyzing trace with hash 42218801, now seen corresponding path program 1 times [2020-09-25 12:18:34,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:34,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027806615] [2020-09-25 12:18:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 12:18:34,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:18:34,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 12:18:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:34,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:34,536 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 12:18:34,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027806615] [2020-09-25 12:18:34,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:34,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671465633] [2020-09-25 12:18:34,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:34,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,544 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand 3 states. [2020-09-25 12:18:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:34,575 INFO L93 Difference]: Finished difference Result 2307 states and 3152 transitions. [2020-09-25 12:18:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:34,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 12:18:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:34,587 INFO L225 Difference]: With dead ends: 2307 [2020-09-25 12:18:34,588 INFO L226 Difference]: Without dead ends: 2305 [2020-09-25 12:18:34,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-25 12:18:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1887. [2020-09-25 12:18:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 12:18:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2542 transitions. [2020-09-25 12:18:34,666 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2542 transitions. Word has length 77 [2020-09-25 12:18:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:34,666 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2542 transitions. [2020-09-25 12:18:34,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2542 transitions. [2020-09-25 12:18:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 12:18:34,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:34,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:34,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:18:34,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -909829732, now seen corresponding path program 1 times [2020-09-25 12:18:34,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:34,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214606593] [2020-09-25 12:18:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:18:34,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:18:34,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:18:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:34,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,760 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 12:18:34,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214606593] [2020-09-25 12:18:34,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:34,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714880078] [2020-09-25 12:18:34,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:34,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:34,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,762 INFO L87 Difference]: Start difference. First operand 1887 states and 2542 transitions. Second operand 3 states. [2020-09-25 12:18:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:34,795 INFO L93 Difference]: Finished difference Result 2291 states and 3104 transitions. [2020-09-25 12:18:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:34,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 12:18:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:34,806 INFO L225 Difference]: With dead ends: 2291 [2020-09-25 12:18:34,807 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 12:18:34,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 12:18:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1887. [2020-09-25 12:18:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 12:18:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2526 transitions. [2020-09-25 12:18:34,855 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2526 transitions. Word has length 78 [2020-09-25 12:18:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:34,855 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2526 transitions. [2020-09-25 12:18:34,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2526 transitions. [2020-09-25 12:18:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 12:18:34,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:34,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:34,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:18:34,858 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1148780726, now seen corresponding path program 1 times [2020-09-25 12:18:34,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:34,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72309332] [2020-09-25 12:18:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:18:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 12:18:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:18:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:34,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,952 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 12:18:34,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72309332] [2020-09-25 12:18:34,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:34,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385654251] [2020-09-25 12:18:34,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:34,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:34,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:34,954 INFO L87 Difference]: Start difference. First operand 1887 states and 2526 transitions. Second operand 3 states. [2020-09-25 12:18:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:35,002 INFO L93 Difference]: Finished difference Result 5475 states and 7360 transitions. [2020-09-25 12:18:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:35,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 12:18:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:35,018 INFO L225 Difference]: With dead ends: 5475 [2020-09-25 12:18:35,018 INFO L226 Difference]: Without dead ends: 3633 [2020-09-25 12:18:35,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-09-25 12:18:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2020-09-25 12:18:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-09-25 12:18:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4814 transitions. [2020-09-25 12:18:35,144 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4814 transitions. Word has length 78 [2020-09-25 12:18:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:35,145 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4814 transitions. [2020-09-25 12:18:35,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4814 transitions. [2020-09-25 12:18:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:18:35,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:35,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:35,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:18:35,149 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1252709924, now seen corresponding path program 1 times [2020-09-25 12:18:35,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:35,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804167904] [2020-09-25 12:18:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:18:35,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:18:35,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 12:18:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:35,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:35,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:35,240 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 12:18:35,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804167904] [2020-09-25 12:18:35,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:35,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:35,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455176755] [2020-09-25 12:18:35,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:35,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,242 INFO L87 Difference]: Start difference. First operand 3631 states and 4814 transitions. Second operand 3 states. [2020-09-25 12:18:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:35,307 INFO L93 Difference]: Finished difference Result 10611 states and 14096 transitions. [2020-09-25 12:18:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:35,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 12:18:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:35,339 INFO L225 Difference]: With dead ends: 10611 [2020-09-25 12:18:35,339 INFO L226 Difference]: Without dead ends: 7025 [2020-09-25 12:18:35,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-09-25 12:18:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2020-09-25 12:18:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 12:18:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9198 transitions. [2020-09-25 12:18:35,522 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9198 transitions. Word has length 79 [2020-09-25 12:18:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:35,523 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9198 transitions. [2020-09-25 12:18:35,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9198 transitions. [2020-09-25 12:18:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:18:35,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:35,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:35,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:18:35,528 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash -358562811, now seen corresponding path program 1 times [2020-09-25 12:18:35,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:35,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775700982] [2020-09-25 12:18:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:18:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:18:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 12:18:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:35,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775700982] [2020-09-25 12:18:35,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:35,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:35,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933561310] [2020-09-25 12:18:35,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:35,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:35,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:35,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,623 INFO L87 Difference]: Start difference. First operand 7023 states and 9198 transitions. Second operand 3 states. [2020-09-25 12:18:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:35,681 INFO L93 Difference]: Finished difference Result 8435 states and 11056 transitions. [2020-09-25 12:18:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:35,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 12:18:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:35,719 INFO L225 Difference]: With dead ends: 8435 [2020-09-25 12:18:35,719 INFO L226 Difference]: Without dead ends: 8433 [2020-09-25 12:18:35,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2020-09-25 12:18:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 7023. [2020-09-25 12:18:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 12:18:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9134 transitions. [2020-09-25 12:18:35,906 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9134 transitions. Word has length 79 [2020-09-25 12:18:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:35,907 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9134 transitions. [2020-09-25 12:18:35,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9134 transitions. [2020-09-25 12:18:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 12:18:35,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:35,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:35,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:18:35,913 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash -449157072, now seen corresponding path program 1 times [2020-09-25 12:18:35,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:35,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348153452] [2020-09-25 12:18:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:18:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:18:35,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 12:18:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:36,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:36,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:36,014 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 12:18:36,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348153452] [2020-09-25 12:18:36,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:36,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:36,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430294245] [2020-09-25 12:18:36,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:36,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:36,016 INFO L87 Difference]: Start difference. First operand 7023 states and 9134 transitions. Second operand 3 states. [2020-09-25 12:18:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:36,071 INFO L93 Difference]: Finished difference Result 8371 states and 10864 transitions. [2020-09-25 12:18:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:36,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 12:18:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:36,090 INFO L225 Difference]: With dead ends: 8371 [2020-09-25 12:18:36,090 INFO L226 Difference]: Without dead ends: 8369 [2020-09-25 12:18:36,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2020-09-25 12:18:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7023. [2020-09-25 12:18:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 12:18:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9070 transitions. [2020-09-25 12:18:36,234 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9070 transitions. Word has length 80 [2020-09-25 12:18:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:36,234 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9070 transitions. [2020-09-25 12:18:36,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9070 transitions. [2020-09-25 12:18:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 12:18:36,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:36,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:36,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:18:36,240 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:36,240 INFO L82 PathProgramCache]: Analyzing trace with hash 179548138, now seen corresponding path program 1 times [2020-09-25 12:18:36,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:36,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287533695] [2020-09-25 12:18:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:18:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:18:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 12:18:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:36,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:36,426 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 12:18:36,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287533695] [2020-09-25 12:18:36,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:36,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:36,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348142429] [2020-09-25 12:18:36,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:36,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:36,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:36,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:36,428 INFO L87 Difference]: Start difference. First operand 7023 states and 9070 transitions. Second operand 3 states. [2020-09-25 12:18:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:36,533 INFO L93 Difference]: Finished difference Result 20595 states and 26608 transitions. [2020-09-25 12:18:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:36,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 12:18:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:36,563 INFO L225 Difference]: With dead ends: 20595 [2020-09-25 12:18:36,564 INFO L226 Difference]: Without dead ends: 13617 [2020-09-25 12:18:36,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-09-25 12:18:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13615. [2020-09-25 12:18:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 12:18:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17326 transitions. [2020-09-25 12:18:36,853 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17326 transitions. Word has length 80 [2020-09-25 12:18:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:36,854 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17326 transitions. [2020-09-25 12:18:36,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17326 transitions. [2020-09-25 12:18:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 12:18:36,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:36,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:36,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 12:18:36,863 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1037388505, now seen corresponding path program 1 times [2020-09-25 12:18:36,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:36,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533188261] [2020-09-25 12:18:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:18:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 12:18:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 12:18:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:36,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:36,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:36,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:36,991 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 12:18:36,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533188261] [2020-09-25 12:18:36,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:36,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:36,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388345623] [2020-09-25 12:18:36,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:36,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:36,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:36,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:36,994 INFO L87 Difference]: Start difference. First operand 13615 states and 17326 transitions. Second operand 3 states. [2020-09-25 12:18:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:37,170 INFO L93 Difference]: Finished difference Result 16051 states and 20272 transitions. [2020-09-25 12:18:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:37,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 12:18:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:37,197 INFO L225 Difference]: With dead ends: 16051 [2020-09-25 12:18:37,197 INFO L226 Difference]: Without dead ends: 16049 [2020-09-25 12:18:37,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2020-09-25 12:18:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 13615. [2020-09-25 12:18:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 12:18:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17198 transitions. [2020-09-25 12:18:37,512 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17198 transitions. Word has length 81 [2020-09-25 12:18:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:37,513 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17198 transitions. [2020-09-25 12:18:37,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17198 transitions. [2020-09-25 12:18:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 12:18:37,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:37,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:37,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 12:18:37,525 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1271271512, now seen corresponding path program 1 times [2020-09-25 12:18:37,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:37,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760046174] [2020-09-25 12:18:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:18:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 12:18:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 12:18:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:37,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:37,622 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 12:18:37,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760046174] [2020-09-25 12:18:37,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:37,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:37,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390234806] [2020-09-25 12:18:37,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:37,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:37,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:37,625 INFO L87 Difference]: Start difference. First operand 13615 states and 17198 transitions. Second operand 3 states. [2020-09-25 12:18:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:37,897 INFO L93 Difference]: Finished difference Result 39987 states and 50480 transitions. [2020-09-25 12:18:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:37,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 12:18:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:37,946 INFO L225 Difference]: With dead ends: 39987 [2020-09-25 12:18:37,946 INFO L226 Difference]: Without dead ends: 26417 [2020-09-25 12:18:37,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2020-09-25 12:18:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 26415. [2020-09-25 12:18:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 12:18:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32814 transitions. [2020-09-25 12:18:38,438 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32814 transitions. Word has length 81 [2020-09-25 12:18:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:38,438 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32814 transitions. [2020-09-25 12:18:38,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32814 transitions. [2020-09-25 12:18:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 12:18:38,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:38,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:38,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 12:18:38,457 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash -124338492, now seen corresponding path program 1 times [2020-09-25 12:18:38,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:38,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083731279] [2020-09-25 12:18:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:18:38,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 12:18:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:38,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 12:18:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:38,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:38,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:38,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:38,682 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 12:18:38,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083731279] [2020-09-25 12:18:38,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:38,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:38,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847642097] [2020-09-25 12:18:38,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:38,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:38,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:38,688 INFO L87 Difference]: Start difference. First operand 26415 states and 32814 transitions. Second operand 3 states. [2020-09-25 12:18:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:38,878 INFO L93 Difference]: Finished difference Result 30771 states and 37680 transitions. [2020-09-25 12:18:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:38,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 12:18:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:38,939 INFO L225 Difference]: With dead ends: 30771 [2020-09-25 12:18:38,939 INFO L226 Difference]: Without dead ends: 30769 [2020-09-25 12:18:38,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2020-09-25 12:18:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 26415. [2020-09-25 12:18:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 12:18:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32558 transitions. [2020-09-25 12:18:40,171 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32558 transitions. Word has length 82 [2020-09-25 12:18:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:40,172 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32558 transitions. [2020-09-25 12:18:40,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32558 transitions. [2020-09-25 12:18:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 12:18:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:40,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:40,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 12:18:40,194 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash 754958110, now seen corresponding path program 1 times [2020-09-25 12:18:40,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:40,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044408878] [2020-09-25 12:18:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:40,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:18:40,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 12:18:40,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:40,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 12:18:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:18:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:40,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:40,324 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 12:18:40,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044408878] [2020-09-25 12:18:40,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:40,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:40,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685441627] [2020-09-25 12:18:40,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:40,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:40,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:40,328 INFO L87 Difference]: Start difference. First operand 26415 states and 32558 transitions. Second operand 3 states. [2020-09-25 12:18:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:40,670 INFO L93 Difference]: Finished difference Result 77617 states and 95535 transitions. [2020-09-25 12:18:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:40,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 12:18:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:40,744 INFO L225 Difference]: With dead ends: 77617 [2020-09-25 12:18:40,744 INFO L226 Difference]: Without dead ends: 26415 [2020-09-25 12:18:40,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26415 states. [2020-09-25 12:18:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26415 to 26415. [2020-09-25 12:18:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 12:18:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 31534 transitions. [2020-09-25 12:18:41,417 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 31534 transitions. Word has length 82 [2020-09-25 12:18:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:41,417 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 31534 transitions. [2020-09-25 12:18:41,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 31534 transitions. [2020-09-25 12:18:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 12:18:41,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:41,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:41,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 12:18:41,437 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1778136659, now seen corresponding path program 1 times [2020-09-25 12:18:41,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:41,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480851023] [2020-09-25 12:18:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:41,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:41,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:18:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:18:41,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:41,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 12:18:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:18:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:41,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:41,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:41,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:41,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:41,538 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 12:18:41,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480851023] [2020-09-25 12:18:41,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:41,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:41,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810524316] [2020-09-25 12:18:41,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:41,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:41,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:41,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:41,540 INFO L87 Difference]: Start difference. First operand 26415 states and 31534 transitions. Second operand 3 states. [2020-09-25 12:18:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:41,677 INFO L93 Difference]: Finished difference Result 26415 states and 31534 transitions. [2020-09-25 12:18:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:41,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-25 12:18:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:41,678 INFO L225 Difference]: With dead ends: 26415 [2020-09-25 12:18:41,679 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:18:41,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:18:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:18:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:18:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:18:41,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-25 12:18:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:41,703 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:18:41,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:18:41,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:18:41,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 12:18:41,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:18:41,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:18:41,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:18:41,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:18:41,735 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:18:41,736 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 12:18:41,736 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 12:18:41,737 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-25 12:18:41,738 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 12:18:41,739 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 12:18:41,740 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-25 12:18:41,741 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-25 12:18:41,742 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 12:18:41,743 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 12:18:41,744 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 12:18:41,745 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 12:18:41,746 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 12:18:41,747 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-25 12:18:41,748 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 12:18:41,749 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 12:18:41,750 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-25 12:18:41,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:18:41 BoogieIcfgContainer [2020-09-25 12:18:41,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:18:41,769 INFO L168 Benchmark]: Toolchain (without parser) took 10992.79 ms. Allocated memory was 146.8 MB in the beginning and 686.3 MB in the end (delta: 539.5 MB). Free memory was 103.0 MB in the beginning and 337.1 MB in the end (delta: -234.1 MB). Peak memory consumption was 305.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,770 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.80 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 91.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,771 INFO L168 Benchmark]: Boogie Preprocessor took 138.66 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.7 MB in the beginning and 179.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,772 INFO L168 Benchmark]: RCFGBuilder took 485.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 154.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,772 INFO L168 Benchmark]: TraceAbstraction took 10022.66 ms. Allocated memory was 201.9 MB in the beginning and 686.3 MB in the end (delta: 484.4 MB). Free memory was 153.7 MB in the beginning and 337.1 MB in the end (delta: -183.3 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:41,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.80 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 91.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.66 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.7 MB in the beginning and 179.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 154.4 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10022.66 ms. Allocated memory was 201.9 MB in the beginning and 686.3 MB in the end (delta: 484.4 MB). Free memory was 153.7 MB in the beginning and 337.1 MB in the end (delta: -183.3 MB). Peak memory consumption was 301.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3610 SDtfs, 1318 SDslu, 2579 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26415occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 10599 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1033 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1540 ConstructedInterpolants, 0 QuantifiedInterpolants, 151100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...