/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:27,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:27,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:27,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:27,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:27,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:27,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:27,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:27,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:27,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:27,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:27,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:27,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:27,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:27,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:27,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:27,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:27,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:27,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:27,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:27,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:27,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:27,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:27,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:27,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:27,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:27,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:27,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:27,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:27,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:27,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:27,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:27,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:27,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:27,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:27,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:27,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:27,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:27,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:27,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:27,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:27,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:25:27,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:27,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:27,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:27,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:27,968 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:27,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:27,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:27,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:27,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:27,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:27,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:27,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:27,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:27,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:27,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:27,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:27,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:27,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:27,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:27,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:27,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:27,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:27,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:27,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:27,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:27,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:27,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:27,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:27,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:27,974 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:25:28,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:28,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:28,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:28,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:28,511 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:28,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 18:25:28,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78bc4d71c/40a74ecb8f824630a1e8844ff89f00e9/FLAG03c69e3c4 [2020-09-24 18:25:29,294 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:29,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 18:25:29,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78bc4d71c/40a74ecb8f824630a1e8844ff89f00e9/FLAG03c69e3c4 [2020-09-24 18:25:29,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78bc4d71c/40a74ecb8f824630a1e8844ff89f00e9 [2020-09-24 18:25:29,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:29,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:29,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:29,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:29,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:29,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:29" (1/1) ... [2020-09-24 18:25:29,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1487e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:29, skipping insertion in model container [2020-09-24 18:25:29,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:29" (1/1) ... [2020-09-24 18:25:29,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:29,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:30,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:30,216 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:30,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:30,403 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:30,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30 WrapperNode [2020-09-24 18:25:30,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:30,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:30,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:30,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:30,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... [2020-09-24 18:25:30,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:30,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:30,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:30,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:30,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:32,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:32,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:32,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:32 BoogieIcfgContainer [2020-09-24 18:25:32,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:32,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:32,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:32,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:32,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:29" (1/3) ... [2020-09-24 18:25:32,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b1cfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:32, skipping insertion in model container [2020-09-24 18:25:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:30" (2/3) ... [2020-09-24 18:25:32,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b1cfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:32, skipping insertion in model container [2020-09-24 18:25:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:32" (3/3) ... [2020-09-24 18:25:32,204 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-24 18:25:32,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:32,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:32,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:32,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:32,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:32,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:32,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:32,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:32,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:32,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:32,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 18:25:32,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:32,332 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] [2020-09-24 18:25:32,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-24 18:25:32,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:32,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335176633] [2020-09-24 18:25:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:33,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:25:33,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-24 18:25:33,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:33,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:33,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:25:33,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:25:33,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:25:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:33,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:33,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:25:33,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:33,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:33,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:25:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:33,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335176633] [2020-09-24 18:25:33,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:33,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:33,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340795981] [2020-09-24 18:25:33,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:33,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:33,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:33,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:33,537 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:35,567 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-24 18:25:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:35,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 18:25:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:35,594 INFO L225 Difference]: With dead ends: 1163 [2020-09-24 18:25:35,595 INFO L226 Difference]: Without dead ends: 634 [2020-09-24 18:25:35,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-24 18:25:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-24 18:25:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 18:25:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-24 18:25:35,709 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-24 18:25:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:35,710 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-24 18:25:35,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-24 18:25:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 18:25:35,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:35,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:35,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:35,720 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-24 18:25:35,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:35,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867436405] [2020-09-24 18:25:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:40,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 18:25:40,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4779 [2020-09-24 18:25:40,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 18:25:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:25:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:40,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:25:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:40,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:40,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 18:25:40,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:40,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:25:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:25:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:40,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867436405] [2020-09-24 18:25:40,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:40,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:40,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411342326] [2020-09-24 18:25:40,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:40,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:40,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:40,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:40,880 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-24 18:25:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:42,724 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-24 18:25:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:42,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-24 18:25:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:42,735 INFO L225 Difference]: With dead ends: 1461 [2020-09-24 18:25:42,735 INFO L226 Difference]: Without dead ends: 896 [2020-09-24 18:25:42,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-24 18:25:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-24 18:25:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-24 18:25:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-24 18:25:42,798 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 133 [2020-09-24 18:25:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:42,799 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-24 18:25:42,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-24 18:25:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 18:25:42,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:42,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:42,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:42,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:42,815 INFO L82 PathProgramCache]: Analyzing trace with hash -27995731, now seen corresponding path program 1 times [2020-09-24 18:25:42,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:42,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990347740] [2020-09-24 18:25:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:25:44,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-09-24 18:25:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 18:25:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:25:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:25:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:25:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:25:44,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:25:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:44,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990347740] [2020-09-24 18:25:44,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:44,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:44,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341246892] [2020-09-24 18:25:44,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:44,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:44,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:44,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:44,600 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 5 states. [2020-09-24 18:25:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:46,070 INFO L93 Difference]: Finished difference Result 2393 states and 3232 transitions. [2020-09-24 18:25:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:46,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-24 18:25:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:46,081 INFO L225 Difference]: With dead ends: 2393 [2020-09-24 18:25:46,081 INFO L226 Difference]: Without dead ends: 1524 [2020-09-24 18:25:46,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-09-24 18:25:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1494. [2020-09-24 18:25:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-24 18:25:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1852 transitions. [2020-09-24 18:25:46,136 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1852 transitions. Word has length 145 [2020-09-24 18:25:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:46,137 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1852 transitions. [2020-09-24 18:25:46,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1852 transitions. [2020-09-24 18:25:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 18:25:46,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:46,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:46,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:46,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:46,144 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-24 18:25:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:46,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356408616] [2020-09-24 18:25:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 18:25:51,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:25:51,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 18:25:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:51,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:51,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 18:25:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:25:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 18:25:51,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 18:25:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:51,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356408616] [2020-09-24 18:25:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:51,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:25:51,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469990288] [2020-09-24 18:25:51,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:25:51,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:51,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:25:51,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:25:51,756 INFO L87 Difference]: Start difference. First operand 1494 states and 1852 transitions. Second operand 8 states. [2020-09-24 18:25:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:54,862 INFO L93 Difference]: Finished difference Result 3749 states and 5018 transitions. [2020-09-24 18:25:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:25:54,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-24 18:25:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:54,881 INFO L225 Difference]: With dead ends: 3749 [2020-09-24 18:25:54,881 INFO L226 Difference]: Without dead ends: 2270 [2020-09-24 18:25:54,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:25:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-24 18:25:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1968. [2020-09-24 18:25:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2020-09-24 18:25:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2425 transitions. [2020-09-24 18:25:54,970 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2425 transitions. Word has length 222 [2020-09-24 18:25:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:54,970 INFO L479 AbstractCegarLoop]: Abstraction has 1968 states and 2425 transitions. [2020-09-24 18:25:54,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:25:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2425 transitions. [2020-09-24 18:25:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 18:25:54,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:54,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:54,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:54,976 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:54,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1101697427, now seen corresponding path program 1 times [2020-09-24 18:25:54,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:54,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731023993] [2020-09-24 18:25:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 18:26:00,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:26:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:26:00,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:26:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:26:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:00,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:00,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:26:00,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:26:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:26:00,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:26:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:26:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:26:00,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 18:26:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:26:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:00,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731023993] [2020-09-24 18:26:00,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:00,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:00,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452699524] [2020-09-24 18:26:00,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:00,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:00,679 INFO L87 Difference]: Start difference. First operand 1968 states and 2425 transitions. Second operand 7 states. [2020-09-24 18:26:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:02,798 INFO L93 Difference]: Finished difference Result 4435 states and 5539 transitions. [2020-09-24 18:26:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:26:02,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-09-24 18:26:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:02,813 INFO L225 Difference]: With dead ends: 4435 [2020-09-24 18:26:02,813 INFO L226 Difference]: Without dead ends: 2482 [2020-09-24 18:26:02,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:26:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-09-24 18:26:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2144. [2020-09-24 18:26:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2020-09-24 18:26:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2517 transitions. [2020-09-24 18:26:02,882 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2517 transitions. Word has length 225 [2020-09-24 18:26:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:02,883 INFO L479 AbstractCegarLoop]: Abstraction has 2144 states and 2517 transitions. [2020-09-24 18:26:02,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2517 transitions. [2020-09-24 18:26:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 18:26:02,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:02,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:02,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:02,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1828729346, now seen corresponding path program 1 times [2020-09-24 18:26:02,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:02,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486893772] [2020-09-24 18:26:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 18:26:07,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-24 18:26:07,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 18:26:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:26:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:08,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:08,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:26:08,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:08,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:26:08,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:26:08,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 18:26:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:26:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:08,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:26:08,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 18:26:08,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:26:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:08,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486893772] [2020-09-24 18:26:08,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:08,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:08,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444912466] [2020-09-24 18:26:08,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:08,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:08,605 INFO L87 Difference]: Start difference. First operand 2144 states and 2517 transitions. Second operand 7 states. [2020-09-24 18:26:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:11,014 INFO L93 Difference]: Finished difference Result 4636 states and 5495 transitions. [2020-09-24 18:26:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:26:11,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-24 18:26:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:11,026 INFO L225 Difference]: With dead ends: 4636 [2020-09-24 18:26:11,026 INFO L226 Difference]: Without dead ends: 2507 [2020-09-24 18:26:11,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:26:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-09-24 18:26:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2461. [2020-09-24 18:26:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2461 states. [2020-09-24 18:26:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 2884 transitions. [2020-09-24 18:26:11,088 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 2884 transitions. Word has length 232 [2020-09-24 18:26:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:11,089 INFO L479 AbstractCegarLoop]: Abstraction has 2461 states and 2884 transitions. [2020-09-24 18:26:11,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 2884 transitions. [2020-09-24 18:26:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-24 18:26:11,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:11,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:11,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:26:11,096 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:11,096 INFO L82 PathProgramCache]: Analyzing trace with hash -363761600, now seen corresponding path program 1 times [2020-09-24 18:26:11,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:11,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836366325] [2020-09-24 18:26:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...