/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:01:32,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:01:32,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:01:32,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:01:32,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:01:32,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:01:32,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:01:32,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:01:32,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:01:32,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:01:32,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:01:32,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:01:32,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:01:32,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:01:32,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:01:32,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:01:32,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:01:32,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:01:32,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:01:32,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:01:32,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:01:32,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:01:32,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:01:32,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:01:32,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:01:32,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:01:32,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:01:32,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:01:32,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:01:32,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:01:32,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:01:32,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:01:32,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:01:32,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:01:32,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:01:32,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:01:32,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:01:32,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:01:32,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:01:32,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:01:32,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:01:32,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:01:32,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:01:32,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:01:32,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:01:32,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:01:32,651 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:01:32,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:01:32,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:01:32,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:01:32,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:01:32,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:01:32,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:01:32,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:01:32,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:01:32,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:01:32,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:01:32,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:01:32,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:01:32,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:01:32,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:01:32,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:01:32,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:01:32,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:01:32,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:01:32,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:01:32,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:01:32,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:01:33,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:01:33,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:01:33,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:01:33,015 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:01:33,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-12 15:01:33,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6381c3b8/28454f6585ca47e091108bd1b95d13bd/FLAG9f800b5b3 [2020-10-12 15:01:33,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:01:33,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-12 15:01:33,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6381c3b8/28454f6585ca47e091108bd1b95d13bd/FLAG9f800b5b3 [2020-10-12 15:01:33,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6381c3b8/28454f6585ca47e091108bd1b95d13bd [2020-10-12 15:01:33,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:01:33,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:01:33,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:01:33,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:01:33,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:01:33,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:01:33" (1/1) ... [2020-10-12 15:01:33,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:33, skipping insertion in model container [2020-10-12 15:01:33,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:01:33" (1/1) ... [2020-10-12 15:01:33,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:01:34,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:01:35,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:01:35,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:01:35,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:01:36,012 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:01:36,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36 WrapperNode [2020-10-12 15:01:36,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:01:36,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:01:36,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:01:36,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:01:36,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... [2020-10-12 15:01:36,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:01:36,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:01:36,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:01:36,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:01:36,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:01:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:01:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:01:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:01:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:01:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:01:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:01:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:01:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:01:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:01:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:01:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:01:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:01:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:01:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:01:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:01:42,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:01:42,403 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:01:42,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:01:42 BoogieIcfgContainer [2020-10-12 15:01:42,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:01:42,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:01:42,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:01:42,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:01:42,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:01:33" (1/3) ... [2020-10-12 15:01:42,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37af24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:01:42, skipping insertion in model container [2020-10-12 15:01:42,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:36" (2/3) ... [2020-10-12 15:01:42,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37af24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:01:42, skipping insertion in model container [2020-10-12 15:01:42,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:01:42" (3/3) ... [2020-10-12 15:01:42,421 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label31.c [2020-10-12 15:01:42,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:01:42,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:01:42,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:01:42,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:01:42,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:01:42,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:01:42,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:01:42,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:01:42,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:01:42,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:01:42,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:01:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-12 15:01:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:01:42,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:01:42,527 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] [2020-10-12 15:01:42,528 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:01:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:01:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1928729618, now seen corresponding path program 1 times [2020-10-12 15:01:42,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:01:42,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555187182] [2020-10-12 15:01:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:01:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:43,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:43,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:01:43,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-12 15:01:43,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:01:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:01:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:01:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:01:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:01:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:43,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:01:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:01:43,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:01:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:01:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:01:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:01:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:01:43,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555187182] [2020-10-12 15:01:43,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:01:43,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:01:43,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032648717] [2020-10-12 15:01:43,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:01:43,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:01:43,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:01:43,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:01:43,199 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-12 15:01:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:01:50,742 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-12 15:01:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:01:50,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 15:01:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:01:50,792 INFO L225 Difference]: With dead ends: 2270 [2020-10-12 15:01:50,792 INFO L226 Difference]: Without dead ends: 1432 [2020-10-12 15:01:50,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:01:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-12 15:01:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-12 15:01:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-12 15:01:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-12 15:01:50,996 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 21 [2020-10-12 15:01:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:01:50,996 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-12 15:01:50,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:01:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-12 15:01:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 15:01:51,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:01:51,005 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:01:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:01:51,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:01:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:01:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash -682103594, now seen corresponding path program 1 times [2020-10-12 15:01:51,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:01:51,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438830383] [2020-10-12 15:01:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:01:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:51,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 15:01:51,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:01:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-12 15:01:51,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:01:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:01:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:01:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:01:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:01:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:52,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:01:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:01:52,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:01:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:01:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:01:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:01:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:01:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:01:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 15:01:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:01:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:01:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:01:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:01:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:01:52,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438830383] [2020-10-12 15:01:52,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:01:52,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:01:52,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538815823] [2020-10-12 15:01:52,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:01:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:01:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:01:52,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:01:52,282 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 8 states. [2020-10-12 15:02:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:07,576 INFO L93 Difference]: Finished difference Result 5761 states and 9098 transitions. [2020-10-12 15:02:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:02:07,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-12 15:02:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:07,599 INFO L225 Difference]: With dead ends: 5761 [2020-10-12 15:02:07,599 INFO L226 Difference]: Without dead ends: 4342 [2020-10-12 15:02:07,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:02:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2020-10-12 15:02:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4328. [2020-10-12 15:02:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4328 states. [2020-10-12 15:02:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 5808 transitions. [2020-10-12 15:02:07,711 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 5808 transitions. Word has length 91 [2020-10-12 15:02:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:07,712 INFO L479 AbstractCegarLoop]: Abstraction has 4328 states and 5808 transitions. [2020-10-12 15:02:07,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:02:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 5808 transitions. [2020-10-12 15:02:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 15:02:07,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:07,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:02:07,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:02:07,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:07,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1520603454, now seen corresponding path program 1 times [2020-10-12 15:02:07,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:07,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527924095] [2020-10-12 15:02:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:08,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 15:02:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:02:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-12 15:02:08,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 15:02:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:08,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:02:08,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:02:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:08,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:02:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 15:02:08,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 15:02:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:02:08,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527924095] [2020-10-12 15:02:08,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:02:08,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:02:08,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414592383] [2020-10-12 15:02:08,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:02:08,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:08,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:02:08,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:08,599 INFO L87 Difference]: Start difference. First operand 4328 states and 5808 transitions. Second operand 7 states. [2020-10-12 15:02:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:17,072 INFO L93 Difference]: Finished difference Result 10285 states and 13590 transitions. [2020-10-12 15:02:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:02:17,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-12 15:02:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:17,111 INFO L225 Difference]: With dead ends: 10285 [2020-10-12 15:02:17,112 INFO L226 Difference]: Without dead ends: 5963 [2020-10-12 15:02:17,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:02:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5963 states. [2020-10-12 15:02:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5963 to 5814. [2020-10-12 15:02:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5814 states. [2020-10-12 15:02:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7405 transitions. [2020-10-12 15:02:17,305 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7405 transitions. Word has length 111 [2020-10-12 15:02:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:17,305 INFO L479 AbstractCegarLoop]: Abstraction has 5814 states and 7405 transitions. [2020-10-12 15:02:17,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:02:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7405 transitions. [2020-10-12 15:02:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 15:02:17,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:17,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:02:17,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:02:17,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash -940562001, now seen corresponding path program 1 times [2020-10-12 15:02:17,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:17,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791652628] [2020-10-12 15:02:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:18,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:18,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 15:02:18,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:02:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-12 15:02:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:02:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:02:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 15:02:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:18,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:18,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:02:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:02:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:18,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:02:18,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 15:02:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:02:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:02:18,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791652628] [2020-10-12 15:02:18,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:02:18,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:02:18,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852376285] [2020-10-12 15:02:18,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:02:18,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:18,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:02:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:18,940 INFO L87 Difference]: Start difference. First operand 5814 states and 7405 transitions. Second operand 7 states. [2020-10-12 15:02:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:30,086 INFO L93 Difference]: Finished difference Result 15392 states and 20354 transitions. [2020-10-12 15:02:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:02:30,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-12 15:02:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:30,136 INFO L225 Difference]: With dead ends: 15392 [2020-10-12 15:02:30,137 INFO L226 Difference]: Without dead ends: 11004 [2020-10-12 15:02:30,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:02:30,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11004 states. [2020-10-12 15:02:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11004 to 10219. [2020-10-12 15:02:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10219 states. [2020-10-12 15:02:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10219 states to 10219 states and 12309 transitions. [2020-10-12 15:02:30,425 INFO L78 Accepts]: Start accepts. Automaton has 10219 states and 12309 transitions. Word has length 118 [2020-10-12 15:02:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:30,427 INFO L479 AbstractCegarLoop]: Abstraction has 10219 states and 12309 transitions. [2020-10-12 15:02:30,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:02:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10219 states and 12309 transitions. [2020-10-12 15:02:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 15:02:30,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:30,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:02:30,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:02:30,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:30,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1999303869, now seen corresponding path program 1 times [2020-10-12 15:02:30,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:30,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087138672] [2020-10-12 15:02:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:31,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 15:02:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:02:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-12 15:02:31,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-12 15:02:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:02:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:32,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:32,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:32,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:02:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:02:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:02:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:32,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 15:02:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 15:02:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 15:02:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-12 15:02:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:02:32,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:02:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 15:02:32,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:02:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:02:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:02:33,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087138672] [2020-10-12 15:02:33,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:02:33,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:02:33,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895690705] [2020-10-12 15:02:33,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:02:33,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:33,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:02:33,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:33,519 INFO L87 Difference]: Start difference. First operand 10219 states and 12309 transitions. Second operand 7 states. [2020-10-12 15:02:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:46,137 INFO L93 Difference]: Finished difference Result 18635 states and 22862 transitions. [2020-10-12 15:02:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:02:46,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-12 15:02:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:46,180 INFO L225 Difference]: With dead ends: 18635 [2020-10-12 15:02:46,181 INFO L226 Difference]: Without dead ends: 8892 [2020-10-12 15:02:46,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:02:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2020-10-12 15:02:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 8764. [2020-10-12 15:02:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8764 states. [2020-10-12 15:02:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8764 states to 8764 states and 9903 transitions. [2020-10-12 15:02:46,416 INFO L78 Accepts]: Start accepts. Automaton has 8764 states and 9903 transitions. Word has length 304 [2020-10-12 15:02:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:46,417 INFO L479 AbstractCegarLoop]: Abstraction has 8764 states and 9903 transitions. [2020-10-12 15:02:46,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:02:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8764 states and 9903 transitions. [2020-10-12 15:02:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-12 15:02:46,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:46,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:02:46,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:02:46,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash -301012303, now seen corresponding path program 1 times [2020-10-12 15:02:46,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:46,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33562545] [2020-10-12 15:02:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-12 15:02:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:02:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 15:02:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:02:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:02:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-12 15:02:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:51,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:51,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:51,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:02:51,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:02:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:52,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:02:52,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-12 15:02:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:02:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 15:02:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:02:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:02:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 15:02:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:02:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:02:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:02:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-12 15:02:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:52,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:02:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:02:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:02:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 15:02:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:02:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:02:53,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33562545] [2020-10-12 15:02:53,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:02:53,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:02:53,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514746708] [2020-10-12 15:02:53,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:02:53,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:53,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:02:53,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:02:53,305 INFO L87 Difference]: Start difference. First operand 8764 states and 9903 transitions. Second operand 9 states. [2020-10-12 15:03:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:04,611 INFO L93 Difference]: Finished difference Result 23699 states and 27542 transitions. [2020-10-12 15:03:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:03:04,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 418 [2020-10-12 15:03:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:04,658 INFO L225 Difference]: With dead ends: 23699 [2020-10-12 15:03:04,659 INFO L226 Difference]: Without dead ends: 15643 [2020-10-12 15:03:04,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:03:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15643 states. [2020-10-12 15:03:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15643 to 15420. [2020-10-12 15:03:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15420 states. [2020-10-12 15:03:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15420 states to 15420 states and 17326 transitions. [2020-10-12 15:03:04,988 INFO L78 Accepts]: Start accepts. Automaton has 15420 states and 17326 transitions. Word has length 418 [2020-10-12 15:03:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:04,989 INFO L479 AbstractCegarLoop]: Abstraction has 15420 states and 17326 transitions. [2020-10-12 15:03:04,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:03:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15420 states and 17326 transitions. [2020-10-12 15:03:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-12 15:03:05,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:05,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:05,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:03:05,040 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:05,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1604521288, now seen corresponding path program 1 times [2020-10-12 15:03:05,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:05,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989291036] [2020-10-12 15:03:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:10,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-12 15:03:10,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:03:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4748 [2020-10-12 15:03:10,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 15:03:10,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 15:03:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:03:10,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:10,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:10,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:10,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:10,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:03:10,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:10,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:10,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:10,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 15:03:10,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:10,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:10,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:03:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:10,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:10,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:03:10,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:03:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-12 15:03:11,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 15:03:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:11,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:11,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:11,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:03:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:03:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:11,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:11,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:03:11,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:11,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 15:03:11,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 15:03:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 15:03:12,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989291036] [2020-10-12 15:03:12,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:12,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:03:12,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876931500] [2020-10-12 15:03:12,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:03:12,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:12,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:03:12,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:03:12,405 INFO L87 Difference]: Start difference. First operand 15420 states and 17326 transitions. Second operand 7 states. [2020-10-12 15:03:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:20,543 INFO L93 Difference]: Finished difference Result 36118 states and 42182 transitions. [2020-10-12 15:03:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:03:20,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 945 [2020-10-12 15:03:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:20,610 INFO L225 Difference]: With dead ends: 36118 [2020-10-12 15:03:20,610 INFO L226 Difference]: Without dead ends: 22116 [2020-10-12 15:03:20,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:03:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22116 states. [2020-10-12 15:03:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22116 to 21983. [2020-10-12 15:03:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21983 states. [2020-10-12 15:03:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21983 states to 21983 states and 25091 transitions. [2020-10-12 15:03:21,063 INFO L78 Accepts]: Start accepts. Automaton has 21983 states and 25091 transitions. Word has length 945 [2020-10-12 15:03:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:21,065 INFO L479 AbstractCegarLoop]: Abstraction has 21983 states and 25091 transitions. [2020-10-12 15:03:21,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:03:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21983 states and 25091 transitions. [2020-10-12 15:03:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-12 15:03:21,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:21,131 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:21,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:03:21,132 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1614433355, now seen corresponding path program 1 times [2020-10-12 15:03:21,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:21,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784324762] [2020-10-12 15:03:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:22,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-12 15:03:26,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:03:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 15:03:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-12 15:03:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 15:03:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:26,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:26,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:26,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:03:26,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:26,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:26,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:26,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 15:03:26,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 15:03:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:03:27,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:03:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:03:27,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:03:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:03:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:03:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:27,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-12 15:03:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:27,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:27,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:03:27,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 15:03:27,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:03:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-12 15:03:28,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784324762] [2020-10-12 15:03:28,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:28,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:03:28,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825898879] [2020-10-12 15:03:28,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:03:28,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:03:28,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:03:28,509 INFO L87 Difference]: Start difference. First operand 21983 states and 25091 transitions. Second operand 7 states. [2020-10-12 15:03:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:38,499 INFO L93 Difference]: Finished difference Result 49799 states and 58403 transitions. [2020-10-12 15:03:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:03:38,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-12 15:03:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:38,569 INFO L225 Difference]: With dead ends: 49799 [2020-10-12 15:03:38,570 INFO L226 Difference]: Without dead ends: 29234 [2020-10-12 15:03:38,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:03:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29234 states. [2020-10-12 15:03:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29234 to 29120. [2020-10-12 15:03:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29120 states. [2020-10-12 15:03:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29120 states to 29120 states and 32994 transitions. [2020-10-12 15:03:39,115 INFO L78 Accepts]: Start accepts. Automaton has 29120 states and 32994 transitions. Word has length 1028 [2020-10-12 15:03:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:39,117 INFO L479 AbstractCegarLoop]: Abstraction has 29120 states and 32994 transitions. [2020-10-12 15:03:39,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:03:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29120 states and 32994 transitions. [2020-10-12 15:03:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-12 15:03:39,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:39,135 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:39,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:03:39,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1863005553, now seen corresponding path program 1 times [2020-10-12 15:03:39,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:39,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283480423] [2020-10-12 15:03:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:44,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:44,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-12 15:03:44,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1043 [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:03:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:44,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:44,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:44,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:44,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:44,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:44,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:44,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:03:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:45,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:45,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:03:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:03:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-12 15:03:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 15:03:45,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 15:03:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 15:03:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2020-10-12 15:03:45,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283480423] [2020-10-12 15:03:45,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:03:45,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925240219] [2020-10-12 15:03:45,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:03:45,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:03:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:03:45,713 INFO L87 Difference]: Start difference. First operand 29120 states and 32994 transitions. Second operand 5 states. [2020-10-12 15:03:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:53,554 INFO L93 Difference]: Finished difference Result 60381 states and 69543 transitions. [2020-10-12 15:03:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:03:53,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1042 [2020-10-12 15:03:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:53,642 INFO L225 Difference]: With dead ends: 60381 [2020-10-12 15:03:53,642 INFO L226 Difference]: Without dead ends: 32679 [2020-10-12 15:03:53,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:03:53,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32679 states. [2020-10-12 15:03:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32679 to 32672. [2020-10-12 15:03:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32672 states. [2020-10-12 15:03:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32672 states to 32672 states and 36957 transitions. [2020-10-12 15:03:54,327 INFO L78 Accepts]: Start accepts. Automaton has 32672 states and 36957 transitions. Word has length 1042 [2020-10-12 15:03:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:54,328 INFO L479 AbstractCegarLoop]: Abstraction has 32672 states and 36957 transitions. [2020-10-12 15:03:54,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:03:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32672 states and 36957 transitions. [2020-10-12 15:03:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-12 15:03:54,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:54,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:54,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:03:54,343 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:54,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1931896336, now seen corresponding path program 1 times [2020-10-12 15:03:54,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:54,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492473740] [2020-10-12 15:03:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:57,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:57,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-12 15:03:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:03:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3439 [2020-10-12 15:03:57,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1050 [2020-10-12 15:03:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:03:57,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:03:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:03:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:03:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:03:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:03:58,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:03:58,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-12 15:03:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 15:03:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2020-10-12 15:03:59,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492473740] [2020-10-12 15:03:59,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:59,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:03:59,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430571982] [2020-10-12 15:03:59,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:03:59,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:03:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:03:59,279 INFO L87 Difference]: Start difference. First operand 32672 states and 36957 transitions. Second operand 5 states. [2020-10-12 15:04:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:06,934 INFO L93 Difference]: Finished difference Result 73835 states and 85554 transitions. [2020-10-12 15:04:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:04:06,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1049 [2020-10-12 15:04:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:07,024 INFO L225 Difference]: With dead ends: 73835 [2020-10-12 15:04:07,024 INFO L226 Difference]: Without dead ends: 39665 [2020-10-12 15:04:07,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:04:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39665 states. [2020-10-12 15:04:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39665 to 39659. [2020-10-12 15:04:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39659 states. [2020-10-12 15:04:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39659 states to 39659 states and 43872 transitions. [2020-10-12 15:04:08,930 INFO L78 Accepts]: Start accepts. Automaton has 39659 states and 43872 transitions. Word has length 1049 [2020-10-12 15:04:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:08,931 INFO L479 AbstractCegarLoop]: Abstraction has 39659 states and 43872 transitions. [2020-10-12 15:04:08,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:04:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 39659 states and 43872 transitions. [2020-10-12 15:04:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2020-10-12 15:04:08,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:08,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:04:08,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:04:08,948 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 559659285, now seen corresponding path program 1 times [2020-10-12 15:04:08,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:08,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640509504] [2020-10-12 15:04:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1158 [2020-10-12 15:04:14,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 976 [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 15:04:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:14,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 15:04:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:04:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:04:14,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 15:04:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:04:14,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 15:04:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-12 15:04:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:04:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 15:04:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 479 proven. 16 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-12 15:04:15,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640509504] [2020-10-12 15:04:15,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:04:15,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536353576] [2020-10-12 15:04:15,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:04:15,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:15,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:04:15,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:04:15,735 INFO L87 Difference]: Start difference. First operand 39659 states and 43872 transitions. Second operand 6 states. [2020-10-12 15:04:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:25,242 INFO L93 Difference]: Finished difference Result 78635 states and 87494 transitions. [2020-10-12 15:04:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:04:25,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1136 [2020-10-12 15:04:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:25,333 INFO L225 Difference]: With dead ends: 78635 [2020-10-12 15:04:25,334 INFO L226 Difference]: Without dead ends: 40394 [2020-10-12 15:04:25,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:04:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40394 states. [2020-10-12 15:04:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40394 to 40359. [2020-10-12 15:04:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40359 states. [2020-10-12 15:04:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40359 states to 40359 states and 43554 transitions. [2020-10-12 15:04:25,871 INFO L78 Accepts]: Start accepts. Automaton has 40359 states and 43554 transitions. Word has length 1136 [2020-10-12 15:04:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:25,872 INFO L479 AbstractCegarLoop]: Abstraction has 40359 states and 43554 transitions. [2020-10-12 15:04:25,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:04:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40359 states and 43554 transitions. [2020-10-12 15:04:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2020-10-12 15:04:25,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:25,888 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:04:25,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:04:25,888 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1285241380, now seen corresponding path program 1 times [2020-10-12 15:04:25,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:25,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909531466] [2020-10-12 15:04:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:26,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1195 [2020-10-12 15:04:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:04:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 15:04:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1084 [2020-10-12 15:04:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 15:04:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:04:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:31,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:04:31,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:04:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:31,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:04:31,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:04:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 15:04:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-12 15:04:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 15:04:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-12 15:04:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:32,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:32,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 15:04:32,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 15:04:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2020-10-12 15:04:32,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909531466] [2020-10-12 15:04:32,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:32,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:04:32,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756886280] [2020-10-12 15:04:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:04:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:04:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:04:32,959 INFO L87 Difference]: Start difference. First operand 40359 states and 43554 transitions. Second operand 7 states. [2020-10-12 15:04:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:43,108 INFO L93 Difference]: Finished difference Result 95008 states and 103652 transitions. [2020-10-12 15:04:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:04:43,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1171 [2020-10-12 15:04:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:43,255 INFO L225 Difference]: With dead ends: 95008 [2020-10-12 15:04:43,256 INFO L226 Difference]: Without dead ends: 56067 [2020-10-12 15:04:43,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:04:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56067 states. [2020-10-12 15:04:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56067 to 56051. [2020-10-12 15:04:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56051 states. [2020-10-12 15:04:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56051 states to 56051 states and 60278 transitions. [2020-10-12 15:04:44,097 INFO L78 Accepts]: Start accepts. Automaton has 56051 states and 60278 transitions. Word has length 1171 [2020-10-12 15:04:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:44,098 INFO L479 AbstractCegarLoop]: Abstraction has 56051 states and 60278 transitions. [2020-10-12 15:04:44,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:04:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 56051 states and 60278 transitions. [2020-10-12 15:04:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2020-10-12 15:04:44,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:44,129 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:04:44,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:04:44,129 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1596638908, now seen corresponding path program 1 times [2020-10-12 15:04:44,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:44,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761405752] [2020-10-12 15:04:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:49,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1323 [2020-10-12 15:04:49,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:04:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-12 15:04:49,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1089 [2020-10-12 15:04:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:04:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:49,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:49,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:49,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:04:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:04:50,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:50,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 15:04:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-12 15:04:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 15:04:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-12 15:04:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:04:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:04:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1147 [2020-10-12 15:04:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-12 15:04:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 391 proven. 71 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-10-12 15:04:52,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761405752] [2020-10-12 15:04:52,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:52,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:04:52,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814424528] [2020-10-12 15:04:52,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:04:52,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:04:52,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:04:52,430 INFO L87 Difference]: Start difference. First operand 56051 states and 60278 transitions. Second operand 7 states. [2020-10-12 15:05:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:05:02,535 INFO L93 Difference]: Finished difference Result 124260 states and 135094 transitions. [2020-10-12 15:05:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:05:02,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1297 [2020-10-12 15:05:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:05:02,656 INFO L225 Difference]: With dead ends: 124260 [2020-10-12 15:05:02,656 INFO L226 Difference]: Without dead ends: 69627 [2020-10-12 15:05:02,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:05:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69627 states. [2020-10-12 15:05:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69627 to 69622. [2020-10-12 15:05:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69622 states. [2020-10-12 15:05:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69622 states to 69622 states and 75079 transitions. [2020-10-12 15:05:03,542 INFO L78 Accepts]: Start accepts. Automaton has 69622 states and 75079 transitions. Word has length 1297 [2020-10-12 15:05:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:05:03,543 INFO L479 AbstractCegarLoop]: Abstraction has 69622 states and 75079 transitions. [2020-10-12 15:05:03,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:05:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 69622 states and 75079 transitions. [2020-10-12 15:05:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1314 [2020-10-12 15:05:03,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:05:03,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:05:03,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:05:03,570 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:05:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:05:03,571 INFO L82 PathProgramCache]: Analyzing trace with hash 942584535, now seen corresponding path program 1 times [2020-10-12 15:05:03,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:05:03,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195188656] [2020-10-12 15:05:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:05:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1337 [2020-10-12 15:05:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:05:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-12 15:05:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:05:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-12 15:05:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-12 15:05:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:05:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:08,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:05:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:05:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:05:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:05:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:05:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:05:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:05:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:05:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:05:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:05:09,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 15:05:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:05:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:05:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 15:05:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-12 15:05:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-12 15:05:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:09,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1163 [2020-10-12 15:05:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:05:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:05:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:05:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:05:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 589 proven. 136 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-12 15:05:10,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195188656] [2020-10-12 15:05:10,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:05:10,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:05:10,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275687041] [2020-10-12 15:05:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:05:10,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:05:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:05:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:05:10,714 INFO L87 Difference]: Start difference. First operand 69622 states and 75079 transitions. Second operand 7 states.