/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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 10:07:22,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:22,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:22,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:22,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:22,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:22,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:22,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:22,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:22,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:22,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:22,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:22,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:22,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:22,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:22,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:22,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:22,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:22,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:22,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:22,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:22,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:22,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:22,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:22,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:22,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:22,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:22,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:22,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:22,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:22,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:22,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:22,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:22,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:22,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:22,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:22,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:22,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:22,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:22,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:22,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:22,467 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 10:07:22,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:22,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:22,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:22,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:22,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:22,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:22,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:22,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:22,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:22,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:22,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:22,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:22,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:22,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:22,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:22,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:22,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:22,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:22,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:22,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:22,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:22,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:22,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:22,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:22,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:22,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:23,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:23,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:23,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:23,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:23,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 10:07:23,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19ff626a/4a078d768abd472ca8e493be8a254a13/FLAGd92dc016c [2020-09-25 10:07:23,745 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:23,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 10:07:23,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19ff626a/4a078d768abd472ca8e493be8a254a13/FLAGd92dc016c [2020-09-25 10:07:23,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19ff626a/4a078d768abd472ca8e493be8a254a13 [2020-09-25 10:07:23,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:23,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:23,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:23,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:23,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:23,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:23" (1/1) ... [2020-09-25 10:07:24,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:23, skipping insertion in model container [2020-09-25 10:07:24,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:23" (1/1) ... [2020-09-25 10:07:24,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:24,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:24,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:24,665 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:24,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:24,970 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24 WrapperNode [2020-09-25 10:07:24,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:24,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:24,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:24,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:24,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:24,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (1/1) ... [2020-09-25 10:07:25,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:25,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:25,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:25,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:25,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (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 10:07:25,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:25,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:26,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:26,635 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:26,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:26 BoogieIcfgContainer [2020-09-25 10:07:26,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:26,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:26,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:26,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:26,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:23" (1/3) ... [2020-09-25 10:07:26,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:26, skipping insertion in model container [2020-09-25 10:07:26,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:24" (2/3) ... [2020-09-25 10:07:26,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:26, skipping insertion in model container [2020-09-25 10:07:26,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:26" (3/3) ... [2020-09-25 10:07:26,662 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 10:07:26,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:26,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:26,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:26,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:26,782 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:26,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:26,783 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:26,783 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:26,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:26,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:26,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 10:07:26,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:26,864 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 10:07:26,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:26,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:26,873 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 10:07:26,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:26,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:07:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 10:07:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:07:32,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:32,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:07:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 10:07:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:07:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:32,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:07:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:32,549 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 10:07:32,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:07:32,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:32,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:07:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133676234] [2020-09-25 10:07:32,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:32,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:32,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:32,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:32,583 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:07:34,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:34,935 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 10:07:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:34,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 10:07:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:34,961 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 10:07:34,962 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 10:07:34,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 10:07:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 10:07:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 10:07:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:07:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 10:07:35,072 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 107 [2020-09-25 10:07:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:35,073 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 10:07:35,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 10:07:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 10:07:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:35,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:35,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:35,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:35,081 INFO L82 PathProgramCache]: Analyzing trace with hash -191439372, now seen corresponding path program 1 times [2020-09-25 10:07:35,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:35,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091992904] [2020-09-25 10:07:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 10:07:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4445 [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:07:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:39,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:07:39,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:39,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:07:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:07:39,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091992904] [2020-09-25 10:07:39,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:39,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:07:39,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704743102] [2020-09-25 10:07:40,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:07:40,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:40,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:07:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:40,002 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 6 states. [2020-09-25 10:07:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:41,844 INFO L93 Difference]: Finished difference Result 1617 states and 2025 transitions. [2020-09-25 10:07:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:07:41,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-09-25 10:07:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:41,853 INFO L225 Difference]: With dead ends: 1617 [2020-09-25 10:07:41,853 INFO L226 Difference]: Without dead ends: 1038 [2020-09-25 10:07:41,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:07:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-25 10:07:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 959. [2020-09-25 10:07:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-09-25 10:07:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1191 transitions. [2020-09-25 10:07:41,911 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1191 transitions. Word has length 128 [2020-09-25 10:07:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:41,912 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1191 transitions. [2020-09-25 10:07:41,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1191 transitions. [2020-09-25 10:07:41,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:07:41,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:41,917 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 10:07:41,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:41,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 10:07:41,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:41,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51641523] [2020-09-25 10:07:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:43,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:43,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:07:43,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-09-25 10:07:43,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:43,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:07:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:07:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:07:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:07:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 10:07:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:43,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:07:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:44,020 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 10:07:44,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51641523] [2020-09-25 10:07:44,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:44,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:07:44,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197741844] [2020-09-25 10:07:44,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:07:44,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:44,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:07:44,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:07:44,023 INFO L87 Difference]: Start difference. First operand 959 states and 1191 transitions. Second operand 8 states. [2020-09-25 10:07:44,999 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 10:07:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:47,635 INFO L93 Difference]: Finished difference Result 2255 states and 2862 transitions. [2020-09-25 10:07:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:07:47,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 10:07:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:47,654 INFO L225 Difference]: With dead ends: 2255 [2020-09-25 10:07:47,654 INFO L226 Difference]: Without dead ends: 1320 [2020-09-25 10:07:47,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:07:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-09-25 10:07:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1112. [2020-09-25 10:07:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-09-25 10:07:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1356 transitions. [2020-09-25 10:07:47,711 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1356 transitions. Word has length 137 [2020-09-25 10:07:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:47,711 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1356 transitions. [2020-09-25 10:07:47,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:07:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1356 transitions. [2020-09-25 10:07:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 10:07:47,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:47,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:47,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:47,718 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:47,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:47,719 INFO L82 PathProgramCache]: Analyzing trace with hash 349525203, now seen corresponding path program 1 times [2020-09-25 10:07:47,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:47,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804932206] [2020-09-25 10:07:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 10:07:52,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:07:52,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 10:07:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:07:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:53,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 10:07:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 10:07:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:53,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:07:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:07:53,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804932206] [2020-09-25 10:07:53,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:53,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:07:53,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587751440] [2020-09-25 10:07:53,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:07:53,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:53,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:07:53,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:53,356 INFO L87 Difference]: Start difference. First operand 1112 states and 1356 transitions. Second operand 7 states. [2020-09-25 10:07:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:55,797 INFO L93 Difference]: Finished difference Result 3392 states and 4371 transitions. [2020-09-25 10:07:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:07:55,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-09-25 10:07:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:55,822 INFO L225 Difference]: With dead ends: 3392 [2020-09-25 10:07:55,822 INFO L226 Difference]: Without dead ends: 2304 [2020-09-25 10:07:55,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:07:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2020-09-25 10:07:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 1694. [2020-09-25 10:07:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-09-25 10:07:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2180 transitions. [2020-09-25 10:07:55,928 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2180 transitions. Word has length 150 [2020-09-25 10:07:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:55,929 INFO L479 AbstractCegarLoop]: Abstraction has 1694 states and 2180 transitions. [2020-09-25 10:07:55,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:07:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2180 transitions. [2020-09-25 10:07:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 10:07:55,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:55,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:55,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:55,940 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:55,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1062060524, now seen corresponding path program 1 times [2020-09-25 10:07:55,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:55,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907725047] [2020-09-25 10:07:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:00,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 10:08:00,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:00,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 10:08:00,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:00,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:08:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:08:00,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:01,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:08:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:01,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:08:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:01,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:08:01,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:08:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:01,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:08:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:08:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:08:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:01,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:08:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:08:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:01,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:08:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:08:01,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907725047] [2020-09-25 10:08:01,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:01,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:08:01,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527782870] [2020-09-25 10:08:01,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:08:01,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:08:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:08:01,421 INFO L87 Difference]: Start difference. First operand 1694 states and 2180 transitions. Second operand 8 states. [2020-09-25 10:08:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:03,852 INFO L93 Difference]: Finished difference Result 4207 states and 5589 transitions. [2020-09-25 10:08:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:08:03,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 158 [2020-09-25 10:08:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:03,869 INFO L225 Difference]: With dead ends: 4207 [2020-09-25 10:08:03,869 INFO L226 Difference]: Without dead ends: 2537 [2020-09-25 10:08:03,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:08:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2020-09-25 10:08:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2297. [2020-09-25 10:08:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-09-25 10:08:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3008 transitions. [2020-09-25 10:08:03,992 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3008 transitions. Word has length 158 [2020-09-25 10:08:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:03,993 INFO L479 AbstractCegarLoop]: Abstraction has 2297 states and 3008 transitions. [2020-09-25 10:08:03,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:08:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3008 transitions. [2020-09-25 10:08:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 10:08:04,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:04,006 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 10:08:04,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:08:04,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:04,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 10:08:04,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:04,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412582596] [2020-09-25 10:08:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:08:09,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:08:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:08:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:08:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:09,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:08:09,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 10:08:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:08:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:08:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 10:08:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:08:09,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:08:09,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:08:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:08:09,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412582596] [2020-09-25 10:08:09,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:09,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:08:09,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601883579] [2020-09-25 10:08:09,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:08:09,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:08:09,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:08:09,562 INFO L87 Difference]: Start difference. First operand 2297 states and 3008 transitions. Second operand 10 states. [2020-09-25 10:08:10,150 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63