/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:04,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:04,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:04,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:04,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:04,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:04,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:04,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:04,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:04,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:04,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:04,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:04,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:04,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:04,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:04,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:04,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:04,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:04,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:04,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:04,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:04,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:04,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:04,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:04,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:04,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:04,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:04,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:04,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:04,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:04,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:04,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:04,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:04,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:04,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:04,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:04,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:04,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:04,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:04,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:04,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:04,483 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 14:43:04,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:04,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:04,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:04,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:04,534 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:04,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:04,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:04,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:04,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:04,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:04,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:04,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:04,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:04,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:04,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:04,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:04,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:04,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:04,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:04,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:04,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:04,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:04,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:04,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:04,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:04,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:04,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:04,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:04,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:04,541 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:43:05,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:05,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:05,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:05,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:05,084 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:05,085 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 14:43:05,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d20dea5a/58486e12744448c68523d88c9ae8d51e/FLAG19f8e0793 [2020-09-25 14:43:05,774 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:05,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 14:43:05,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d20dea5a/58486e12744448c68523d88c9ae8d51e/FLAG19f8e0793 [2020-09-25 14:43:06,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d20dea5a/58486e12744448c68523d88c9ae8d51e [2020-09-25 14:43:06,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:06,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:06,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:06,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:06,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:06,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06, skipping insertion in model container [2020-09-25 14:43:06,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:06,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:06,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:06,772 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:06,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:06,914 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06 WrapperNode [2020-09-25 14:43:06,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:06,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:06,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:06,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:06,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:06,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:07,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:07,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (1/1) ... [2020-09-25 14:43:07,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:07,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:07,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:07,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:07,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (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 14:43:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:08,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:08,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:08,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:08 BoogieIcfgContainer [2020-09-25 14:43:08,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:08,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:08,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:08,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:08,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:06" (1/3) ... [2020-09-25 14:43:08,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:08, skipping insertion in model container [2020-09-25 14:43:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:06" (2/3) ... [2020-09-25 14:43:08,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:08, skipping insertion in model container [2020-09-25 14:43:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:08" (3/3) ... [2020-09-25 14:43:08,684 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 14:43:08,696 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:08,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:08,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:08,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:08,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:08,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:08,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:08,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:08,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:08,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:08,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:43:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 14:43:08,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:08,813 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] [2020-09-25 14:43:08,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 14:43:08,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:08,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 14:43:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:43:09,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-25 14:43:09,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:43:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:09,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:43:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:09,853 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 14:43:09,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 14:43:09,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:09,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:09,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107420487] [2020-09-25 14:43:09,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:09,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:09,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:09,888 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:43:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,021 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 14:43:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:12,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 14:43:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,064 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 14:43:12,065 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 14:43:12,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 14:43:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 14:43:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 14:43:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 14:43:12,181 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 14:43:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,182 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 14:43:12,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 14:43:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 14:43:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:12,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:12,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 14:43:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247414909] [2020-09-25 14:43:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:16,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 14:43:16,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-09-25 14:43:16,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:16,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:43:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:43:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:16,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:16,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 14:43:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:16,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:43:16,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247414909] [2020-09-25 14:43:16,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:16,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:16,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356871276] [2020-09-25 14:43:16,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:16,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:16,691 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 14:43:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:18,549 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 14:43:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:18,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 14:43:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:18,556 INFO L225 Difference]: With dead ends: 698 [2020-09-25 14:43:18,556 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 14:43:18,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 14:43:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 14:43:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 14:43:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 14:43:18,591 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 116 [2020-09-25 14:43:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:18,592 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 14:43:18,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 14:43:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 14:43:18,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:18,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:18,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:18,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 14:43:18,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:18,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460422375] [2020-09-25 14:43:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:21,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 14:43:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2883 [2020-09-25 14:43:21,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:21,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:43:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:21,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:21,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:21,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:21,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:21,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:43:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:21,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:21,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460422375] [2020-09-25 14:43:21,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:21,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:21,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119736212] [2020-09-25 14:43:21,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:21,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:21,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:21,945 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 8 states. [2020-09-25 14:43:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:25,395 INFO L93 Difference]: Finished difference Result 1653 states and 2185 transitions. [2020-09-25 14:43:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:25,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-25 14:43:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:25,403 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 14:43:25,404 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 14:43:25,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 14:43:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 890. [2020-09-25 14:43:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-25 14:43:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1119 transitions. [2020-09-25 14:43:25,446 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1119 transitions. Word has length 126 [2020-09-25 14:43:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:25,447 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1119 transitions. [2020-09-25 14:43:25,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1119 transitions. [2020-09-25 14:43:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 14:43:25,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:25,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:25,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:25,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-25 14:43:25,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:25,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87730607] [2020-09-25 14:43:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:43:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3621 [2020-09-25 14:43:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:43:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:43:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 14:43:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 14:43:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:43:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:29,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87730607] [2020-09-25 14:43:29,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:29,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:29,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443711062] [2020-09-25 14:43:29,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:29,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:29,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:29,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:29,555 INFO L87 Difference]: Start difference. First operand 890 states and 1119 transitions. Second operand 7 states. [2020-09-25 14:43:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:31,879 INFO L93 Difference]: Finished difference Result 2289 states and 3010 transitions. [2020-09-25 14:43:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:31,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 14:43:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:31,894 INFO L225 Difference]: With dead ends: 2289 [2020-09-25 14:43:31,894 INFO L226 Difference]: Without dead ends: 1414 [2020-09-25 14:43:31,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-09-25 14:43:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1196. [2020-09-25 14:43:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 14:43:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1446 transitions. [2020-09-25 14:43:31,968 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1446 transitions. Word has length 145 [2020-09-25 14:43:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:31,969 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1446 transitions. [2020-09-25 14:43:31,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1446 transitions. [2020-09-25 14:43:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:43:31,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:31,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:31,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:31,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1096000346, now seen corresponding path program 1 times [2020-09-25 14:43:31,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:31,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547712664] [2020-09-25 14:43:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:43:36,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4180 [2020-09-25 14:43:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:43:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:36,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:43:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:43:36,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 14:43:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 14:43:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:36,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547712664] [2020-09-25 14:43:36,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:36,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:43:36,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630018739] [2020-09-25 14:43:36,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:36,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:36,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:36,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:36,796 INFO L87 Difference]: Start difference. First operand 1196 states and 1446 transitions. Second operand 8 states. [2020-09-25 14:43:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:39,254 INFO L93 Difference]: Finished difference Result 2696 states and 3372 transitions. [2020-09-25 14:43:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:43:39,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 14:43:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:39,268 INFO L225 Difference]: With dead ends: 2696 [2020-09-25 14:43:39,268 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 14:43:39,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 14:43:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1668. [2020-09-25 14:43:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2020-09-25 14:43:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1997 transitions. [2020-09-25 14:43:39,334 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1997 transitions. Word has length 169 [2020-09-25 14:43:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:39,334 INFO L479 AbstractCegarLoop]: Abstraction has 1668 states and 1997 transitions. [2020-09-25 14:43:39,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1997 transitions. [2020-09-25 14:43:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 14:43:39,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:39,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:39,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:39,340 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1639632703, now seen corresponding path program 1 times [2020-09-25 14:43:39,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:39,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217198464] [2020-09-25 14:43:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 14:43:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:43:44,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:43:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:43:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:44,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:44,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:44,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:44,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:43:44,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:44,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:44,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 14:43:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:44,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:44,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217198464] [2020-09-25 14:43:44,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:44,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:44,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639257527] [2020-09-25 14:43:44,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:44,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:44,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:44,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:44,927 INFO L87 Difference]: Start difference. First operand 1668 states and 1997 transitions. Second operand 7 states. [2020-09-25 14:43:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:47,480 INFO L93 Difference]: Finished difference Result 3038 states and 3776 transitions. [2020-09-25 14:43:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:47,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 14:43:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:47,496 INFO L225 Difference]: With dead ends: 3038 [2020-09-25 14:43:47,496 INFO L226 Difference]: Without dead ends: 2020 [2020-09-25 14:43:47,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-09-25 14:43:47,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1836. [2020-09-25 14:43:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2020-09-25 14:43:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2201 transitions. [2020-09-25 14:43:47,564 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2201 transitions. Word has length 205 [2020-09-25 14:43:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:47,565 INFO L479 AbstractCegarLoop]: Abstraction has 1836 states and 2201 transitions. [2020-09-25 14:43:47,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2201 transitions. [2020-09-25 14:43:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 14:43:47,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:47,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:47,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:43:47,570 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash 785034117, now seen corresponding path program 1 times [2020-09-25 14:43:47,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:47,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471091556] [2020-09-25 14:43:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking...