/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:53,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:53,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:53,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:53,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:53,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:53,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:53,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:53,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:53,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:53,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:53,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:53,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:53,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:53,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:53,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:53,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:53,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:53,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:53,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:53,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:53,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:53,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:53,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:53,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:53,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:53,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:53,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:53,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:53,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:53,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:53,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:53,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:53,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:53,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:53,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:53,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:53,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:53,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:53,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:53,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:53,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:47:53,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:53,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:53,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:53,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:53,472 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:53,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:53,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:53,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:53,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:53,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:53,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:53,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:53,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:53,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:53,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:53,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:53,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:53,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:53,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:53,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:53,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:53,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:53,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:53,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:53,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:53,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:53,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:53,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:53,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:53,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:47:53,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:54,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:54,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:54,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:54,012 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:54,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 06:47:54,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d969f766/cfd706e3647c4589bdb458d5c7141968/FLAG4381a8d9f [2020-09-25 06:47:54,765 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:54,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 06:47:54,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d969f766/cfd706e3647c4589bdb458d5c7141968/FLAG4381a8d9f [2020-09-25 06:47:55,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d969f766/cfd706e3647c4589bdb458d5c7141968 [2020-09-25 06:47:55,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:55,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:55,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:55,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:55,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:55,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55, skipping insertion in model container [2020-09-25 06:47:55,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:55,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:55,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:55,673 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:55,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:55,802 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:55,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55 WrapperNode [2020-09-25 06:47:55,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:55,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:55,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:55,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:55,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... [2020-09-25 06:47:55,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:55,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:55,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:55,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:55,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:57,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:57,526 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:57,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:57 BoogieIcfgContainer [2020-09-25 06:47:57,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:57,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:57,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:57,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:57,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:55" (1/3) ... [2020-09-25 06:47:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:57, skipping insertion in model container [2020-09-25 06:47:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:55" (2/3) ... [2020-09-25 06:47:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:57, skipping insertion in model container [2020-09-25 06:47:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:57" (3/3) ... [2020-09-25 06:47:57,546 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 06:47:57,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:57,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:57,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:57,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:57,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:57,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:57,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:57,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:57,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:57,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:57,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:47:57,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:57,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:57,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 06:47:57,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:57,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:47:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:58,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:47:58,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-09-25 06:47:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:58,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:47:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:59,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:47:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:59,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:59,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:47:59,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:59,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:47:59,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982628202] [2020-09-25 06:47:59,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:59,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:59,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:59,139 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:48:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:02,132 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 06:48:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:48:02,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 06:48:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:02,159 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 06:48:02,160 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 06:48:02,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 06:48:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 06:48:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 06:48:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 06:48:02,283 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 51 [2020-09-25 06:48:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:02,284 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 06:48:02,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 06:48:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:48:02,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:02,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:02,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:02,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1838754330, now seen corresponding path program 1 times [2020-09-25 06:48:02,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:02,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738408479] [2020-09-25 06:48:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:04,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:48:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-09-25 06:48:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:04,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:48:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:05,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 06:48:05,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:05,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738408479] [2020-09-25 06:48:05,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:05,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:05,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175756986] [2020-09-25 06:48:05,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:05,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:05,380 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 06:48:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:07,670 INFO L93 Difference]: Finished difference Result 1800 states and 2316 transitions. [2020-09-25 06:48:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:07,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-09-25 06:48:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:07,680 INFO L225 Difference]: With dead ends: 1800 [2020-09-25 06:48:07,681 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 06:48:07,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 06:48:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1040. [2020-09-25 06:48:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 06:48:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1243 transitions. [2020-09-25 06:48:07,749 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1243 transitions. Word has length 134 [2020-09-25 06:48:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:07,750 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1243 transitions. [2020-09-25 06:48:07,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:07,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1243 transitions. [2020-09-25 06:48:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:48:07,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:07,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:07,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:07,759 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:07,759 INFO L82 PathProgramCache]: Analyzing trace with hash -455767542, now seen corresponding path program 1 times [2020-09-25 06:48:07,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:07,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381420253] [2020-09-25 06:48:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:48:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-09-25 06:48:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:48:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:48:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:10,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 06:48:10,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:48:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:10,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381420253] [2020-09-25 06:48:10,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:10,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:48:10,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449315285] [2020-09-25 06:48:10,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:10,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:10,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:10,921 INFO L87 Difference]: Start difference. First operand 1040 states and 1243 transitions. Second operand 5 states. [2020-09-25 06:48:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:12,953 INFO L93 Difference]: Finished difference Result 2249 states and 2811 transitions. [2020-09-25 06:48:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:48:12,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 06:48:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:12,964 INFO L225 Difference]: With dead ends: 2249 [2020-09-25 06:48:12,965 INFO L226 Difference]: Without dead ends: 1374 [2020-09-25 06:48:12,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-09-25 06:48:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1350. [2020-09-25 06:48:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-09-25 06:48:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1629 transitions. [2020-09-25 06:48:13,015 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1629 transitions. Word has length 140 [2020-09-25 06:48:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:13,016 INFO L479 AbstractCegarLoop]: Abstraction has 1350 states and 1629 transitions. [2020-09-25 06:48:13,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1629 transitions. [2020-09-25 06:48:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 06:48:13,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:13,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:13,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:13,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:13,021 INFO L82 PathProgramCache]: Analyzing trace with hash 144855952, now seen corresponding path program 1 times [2020-09-25 06:48:13,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:13,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807007546] [2020-09-25 06:48:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:14,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:14,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-09-25 06:48:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:14,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:48:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:48:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:14,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:14,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:14,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:48:14,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:14,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 06:48:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:14,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:48:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:14,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807007546] [2020-09-25 06:48:14,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:14,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:14,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581027820] [2020-09-25 06:48:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:14,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:14,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:14,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:14,698 INFO L87 Difference]: Start difference. First operand 1350 states and 1629 transitions. Second operand 7 states. [2020-09-25 06:48:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:16,837 INFO L93 Difference]: Finished difference Result 3225 states and 4035 transitions. [2020-09-25 06:48:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:16,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 06:48:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:16,850 INFO L225 Difference]: With dead ends: 3225 [2020-09-25 06:48:16,850 INFO L226 Difference]: Without dead ends: 2040 [2020-09-25 06:48:16,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-09-25 06:48:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1974. [2020-09-25 06:48:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-09-25 06:48:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2281 transitions. [2020-09-25 06:48:16,934 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2281 transitions. Word has length 156 [2020-09-25 06:48:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:16,935 INFO L479 AbstractCegarLoop]: Abstraction has 1974 states and 2281 transitions. [2020-09-25 06:48:16,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2281 transitions. [2020-09-25 06:48:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 06:48:16,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:16,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:16,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:16,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:16,942 INFO L82 PathProgramCache]: Analyzing trace with hash 385731674, now seen corresponding path program 1 times [2020-09-25 06:48:16,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:16,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642407095] [2020-09-25 06:48:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 06:48:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:48:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:48:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:22,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 06:48:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:22,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:22,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:22,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:22,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:22,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 06:48:22,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:22,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:48:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:48:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 06:48:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:22,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:48:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-25 06:48:22,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642407095] [2020-09-25 06:48:22,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:22,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:48:22,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077410039] [2020-09-25 06:48:22,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:22,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:22,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:22,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:22,647 INFO L87 Difference]: Start difference. First operand 1974 states and 2281 transitions. Second operand 5 states. [2020-09-25 06:48:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:24,544 INFO L93 Difference]: Finished difference Result 2590 states and 3071 transitions. [2020-09-25 06:48:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:48:24,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-09-25 06:48:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:24,564 INFO L225 Difference]: With dead ends: 2590 [2020-09-25 06:48:24,564 INFO L226 Difference]: Without dead ends: 2588 [2020-09-25 06:48:24,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2020-09-25 06:48:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2282. [2020-09-25 06:48:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-09-25 06:48:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2689 transitions. [2020-09-25 06:48:24,655 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2689 transitions. Word has length 235 [2020-09-25 06:48:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:24,657 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 2689 transitions. [2020-09-25 06:48:24,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2689 transitions. [2020-09-25 06:48:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 06:48:24,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:24,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:24,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:24,665 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1167088697, now seen corresponding path program 1 times [2020-09-25 06:48:24,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:24,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280761774] [2020-09-25 06:48:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 06:48:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:48:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:48:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:48:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:30,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:30,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:30,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:48:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:30,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280761774] [2020-09-25 06:48:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:30,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:30,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10221532] [2020-09-25 06:48:30,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:30,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:30,276 INFO L87 Difference]: Start difference. First operand 2282 states and 2689 transitions. Second operand 8 states. [2020-09-25 06:48:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:33,699 INFO L93 Difference]: Finished difference Result 6937 states and 8550 transitions. [2020-09-25 06:48:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:48:33,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-25 06:48:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:33,724 INFO L225 Difference]: With dead ends: 6937 [2020-09-25 06:48:33,724 INFO L226 Difference]: Without dead ends: 4820 [2020-09-25 06:48:33,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:48:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2020-09-25 06:48:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 3409. [2020-09-25 06:48:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3409 states. [2020-09-25 06:48:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3409 states to 3409 states and 4076 transitions. [2020-09-25 06:48:33,855 INFO L78 Accepts]: Start accepts. Automaton has 3409 states and 4076 transitions. Word has length 238 [2020-09-25 06:48:33,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:33,856 INFO L479 AbstractCegarLoop]: Abstraction has 3409 states and 4076 transitions. [2020-09-25 06:48:33,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3409 states and 4076 transitions. [2020-09-25 06:48:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 06:48:33,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:33,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:33,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:33,865 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash -772494115, now seen corresponding path program 1 times [2020-09-25 06:48:33,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:33,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952941318] [2020-09-25 06:48:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:38,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 06:48:38,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 06:48:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:38,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 06:48:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:39,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:48:39,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:39,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:48:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 06:48:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:39,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 06:48:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:39,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952941318] [2020-09-25 06:48:39,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:39,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:39,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502689537] [2020-09-25 06:48:39,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:39,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:39,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:39,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:39,782 INFO L87 Difference]: Start difference. First operand 3409 states and 4076 transitions. Second operand 7 states. [2020-09-25 06:48:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:42,585 INFO L93 Difference]: Finished difference Result 8611 states and 10459 transitions. [2020-09-25 06:48:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:42,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-09-25 06:48:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:42,587 INFO L225 Difference]: With dead ends: 8611 [2020-09-25 06:48:42,587 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:48:42,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:48:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:48:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:48:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:48:42,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 291 [2020-09-25 06:48:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:42,607 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:48:42,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:48:42,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:48:42,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:48:42,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.