/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=0.4 --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/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:22,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:22,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:22,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:22,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:22,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:22,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:22,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:22,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:22,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:22,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:22,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:22,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:22,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:22,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:22,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:22,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:22,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:22,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:22,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:22,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:22,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:22,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:22,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:22,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:22,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:22,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:22,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:22,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:22,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:22,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:22,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:22,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:22,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:22,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:22,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:22,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:22,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:22,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:22,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:22,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:22,450 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 05:34:22,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:22,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:22,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:22,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:22,481 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:22,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:22,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:22,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:22,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:22,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:22,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:22,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:22,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:22,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:22,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:22,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:22,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:22,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:22,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:22,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:22,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:22,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:22,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:22,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:22,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:22,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:22,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:22,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:22,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:22,489 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:34:22,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:22,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:22,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:22,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:22,995 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:22,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 05:34:23,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a359a0367/7e870fafe562459f87771d197c62068d/FLAG0cd9cf539 [2020-09-25 05:34:23,736 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:23,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 05:34:23,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a359a0367/7e870fafe562459f87771d197c62068d/FLAG0cd9cf539 [2020-09-25 05:34:23,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a359a0367/7e870fafe562459f87771d197c62068d [2020-09-25 05:34:24,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:24,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:24,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:24,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:24,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:24,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:23" (1/1) ... [2020-09-25 05:34:24,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a95ee96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24, skipping insertion in model container [2020-09-25 05:34:24,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:23" (1/1) ... [2020-09-25 05:34:24,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:24,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:24,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:24,663 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:24,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:24,802 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:24,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24 WrapperNode [2020-09-25 05:34:24,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:24,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:24,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:24,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:24,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:24,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:24,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:24,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:24,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (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 05:34:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:26,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:26,375 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:26,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:26 BoogieIcfgContainer [2020-09-25 05:34:26,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:26,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:26,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:26,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:26,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:23" (1/3) ... [2020-09-25 05:34:26,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b80c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:26, skipping insertion in model container [2020-09-25 05:34:26,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24" (2/3) ... [2020-09-25 05:34:26,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b80c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:26, skipping insertion in model container [2020-09-25 05:34:26,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:26" (3/3) ... [2020-09-25 05:34:26,396 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 05:34:26,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:26,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:26,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:26,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:26,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:26,491 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:26,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:26,492 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:26,492 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:26,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:26,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 05:34:26,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:26,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:26,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:26,586 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 05:34:26,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:26,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713151152] [2020-09-25 05:34:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 05:34:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:34:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:34:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:32,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:34:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:32,134 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 05:34:32,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713151152] [2020-09-25 05:34:32,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:32,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:32,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646781995] [2020-09-25 05:34:32,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:32,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:32,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:32,168 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:34,278 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:34:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:34,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 05:34:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:34,309 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:34:34,309 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:34:34,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:34:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:34:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:34,422 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 05:34:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:34,423 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:34,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 05:34:34,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:34,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:34,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:34,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 05:34:34,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:34,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276513490] [2020-09-25 05:34:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 05:34:39,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 05:34:39,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:39,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:34:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:34:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:39,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:39,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:34:39,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:39,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:39,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:34:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:39,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:39,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276513490] [2020-09-25 05:34:39,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:39,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:39,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972131304] [2020-09-25 05:34:39,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:39,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:39,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:39,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:39,807 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:34:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:42,346 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 05:34:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:42,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 05:34:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:42,361 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 05:34:42,361 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 05:34:42,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 05:34:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 05:34:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 05:34:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 05:34:42,435 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 128 [2020-09-25 05:34:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:42,435 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 05:34:42,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 05:34:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 05:34:42,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:42,441 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:42,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:42,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1990961385, now seen corresponding path program 1 times [2020-09-25 05:34:42,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:42,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864041333] [2020-09-25 05:34:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:34:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:34:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 05:34:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:47,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:34:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:34:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:34:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:34:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:47,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:34:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:47,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864041333] [2020-09-25 05:34:47,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:47,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:47,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018351295] [2020-09-25 05:34:47,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:47,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:47,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:47,699 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 5 states. [2020-09-25 05:34:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:49,737 INFO L93 Difference]: Finished difference Result 1836 states and 2265 transitions. [2020-09-25 05:34:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:49,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 05:34:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:49,747 INFO L225 Difference]: With dead ends: 1836 [2020-09-25 05:34:49,748 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 05:34:49,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 05:34:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 05:34:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 05:34:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1066 transitions. [2020-09-25 05:34:49,779 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1066 transitions. Word has length 129 [2020-09-25 05:34:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:49,780 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1066 transitions. [2020-09-25 05:34:49,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1066 transitions. [2020-09-25 05:34:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 05:34:49,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:49,785 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:49,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:49,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash -532868870, now seen corresponding path program 1 times [2020-09-25 05:34:49,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:49,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960390256] [2020-09-25 05:34:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:34:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:34:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:54,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:34:54,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:54,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:55,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:34:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:55,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:55,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:55,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960390256] [2020-09-25 05:34:55,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:55,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:55,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83499127] [2020-09-25 05:34:55,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:55,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:55,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:55,129 INFO L87 Difference]: Start difference. First operand 901 states and 1066 transitions. Second operand 5 states. [2020-09-25 05:34:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:57,048 INFO L93 Difference]: Finished difference Result 2373 states and 2913 transitions. [2020-09-25 05:34:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:57,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 05:34:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:57,065 INFO L225 Difference]: With dead ends: 2373 [2020-09-25 05:34:57,066 INFO L226 Difference]: Without dead ends: 1496 [2020-09-25 05:34:57,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-09-25 05:34:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1473. [2020-09-25 05:34:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-09-25 05:34:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1783 transitions. [2020-09-25 05:34:57,152 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1783 transitions. Word has length 136 [2020-09-25 05:34:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:57,153 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 1783 transitions. [2020-09-25 05:34:57,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1783 transitions. [2020-09-25 05:34:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 05:34:57,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:57,175 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:34:57,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:57,175 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 05:34:57,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:57,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515810046] [2020-09-25 05:34:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 05:34:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1762 [2020-09-25 05:34:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:34:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:34:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:34:59,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:34:59,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:34:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:34:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:59,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515810046] [2020-09-25 05:34:59,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:59,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:34:59,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056262669] [2020-09-25 05:34:59,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:59,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:59,374 INFO L87 Difference]: Start difference. First operand 1473 states and 1783 transitions. Second operand 8 states. [2020-09-25 05:35:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:02,278 INFO L93 Difference]: Finished difference Result 3045 states and 3702 transitions. [2020-09-25 05:35:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:35:02,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 05:35:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:02,290 INFO L225 Difference]: With dead ends: 3045 [2020-09-25 05:35:02,291 INFO L226 Difference]: Without dead ends: 1737 [2020-09-25 05:35:02,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:35:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-09-25 05:35:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1656. [2020-09-25 05:35:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-25 05:35:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 1998 transitions. [2020-09-25 05:35:02,359 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 1998 transitions. Word has length 137 [2020-09-25 05:35:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:02,359 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 1998 transitions. [2020-09-25 05:35:02,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 1998 transitions. [2020-09-25 05:35:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 05:35:02,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:02,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:02,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:02,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 05:35:02,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:02,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119928772] [2020-09-25 05:35:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:35:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4714 [2020-09-25 05:35:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:35:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:35:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:07,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 05:35:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:35:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:35:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:35:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:35:07,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:07,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119928772] [2020-09-25 05:35:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:07,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670376746] [2020-09-25 05:35:07,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:07,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:07,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:07,505 INFO L87 Difference]: Start difference. First operand 1656 states and 1998 transitions. Second operand 7 states. [2020-09-25 05:35:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:10,433 INFO L93 Difference]: Finished difference Result 3608 states and 4554 transitions. [2020-09-25 05:35:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:10,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 05:35:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:10,450 INFO L225 Difference]: With dead ends: 3608 [2020-09-25 05:35:10,450 INFO L226 Difference]: Without dead ends: 2117 [2020-09-25 05:35:10,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:35:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2020-09-25 05:35:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1958. [2020-09-25 05:35:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 05:35:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2345 transitions. [2020-09-25 05:35:10,528 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2345 transitions. Word has length 158 [2020-09-25 05:35:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:10,528 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2345 transitions. [2020-09-25 05:35:10,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2345 transitions. [2020-09-25 05:35:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 05:35:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:10,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:35:10,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:10,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 05:35:10,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:10,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615077293] [2020-09-25 05:35:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking...