/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:27,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:27,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:27,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:27,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:27,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:27,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:27,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:27,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:27,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:27,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:27,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:27,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:27,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:27,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:27,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:27,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:27,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:27,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:27,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:27,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:27,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:27,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:27,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:27,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:27,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:27,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:27,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:27,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:27,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:27,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:27,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:27,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:27,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:27,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:27,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:27,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:27,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:27,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:27,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:27,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:27,642 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 14:42:27,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:27,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:27,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:27,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:27,667 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:27,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:27,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:27,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:27,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:27,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:27,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:27,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:27,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:27,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:27,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:27,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:27,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:27,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:27,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:27,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:27,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:27,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:27,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:27,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:27,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:27,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:27,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:27,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:27,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:27,673 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 14:42:28,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:28,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:28,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:28,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:28,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:28,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 14:42:28,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4a78784/a12f593dc9964b1cbf836b24380979e9/FLAG41ef9fa7b [2020-09-25 14:42:28,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:28,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 14:42:28,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4a78784/a12f593dc9964b1cbf836b24380979e9/FLAG41ef9fa7b [2020-09-25 14:42:29,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db4a78784/a12f593dc9964b1cbf836b24380979e9 [2020-09-25 14:42:29,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:29,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:29,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:29,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:29,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:29,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29, skipping insertion in model container [2020-09-25 14:42:29,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:29,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:29,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:29,671 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:29,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:29,913 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:29,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29 WrapperNode [2020-09-25 14:42:29,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:29,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:29,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:29,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:29,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:29,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:30,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:30,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (1/1) ... [2020-09-25 14:42:30,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:30,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:30,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:30,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:30,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (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 14:42:30,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:30,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:30,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:31,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:31,584 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:31,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:31 BoogieIcfgContainer [2020-09-25 14:42:31,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:31,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:31,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:31,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:31,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:29" (1/3) ... [2020-09-25 14:42:31,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:31, skipping insertion in model container [2020-09-25 14:42:31,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:29" (2/3) ... [2020-09-25 14:42:31,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:31, skipping insertion in model container [2020-09-25 14:42:31,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:31" (3/3) ... [2020-09-25 14:42:31,603 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 14:42:31,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:31,626 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:31,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:31,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:31,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:31,684 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:31,684 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:31,684 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:31,684 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:31,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:31,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:31,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 14:42:31,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:31,725 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] [2020-09-25 14:42:31,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 14:42:31,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:31,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 14:42:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:32,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 14:42:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:32,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:42:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:42:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:42:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:33,208 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 14:42:33,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 14:42:33,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:33,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:42:33,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196554185] [2020-09-25 14:42:33,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:33,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:33,241 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:42:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:35,860 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 14:42:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:42:35,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 14:42:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:35,908 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:42:35,908 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 14:42:35,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 14:42:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 14:42:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:42:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 14:42:36,055 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 73 [2020-09-25 14:42:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:36,056 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 14:42:36,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 14:42:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:42:36,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:36,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:36,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:36,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 14:42:36,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:36,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97941289] [2020-09-25 14:42:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:42:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:42:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:41,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 14:42:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:42:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:41,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:41,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:41,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:42:41,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:41,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:41,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:41,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 14:42:41,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:41,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:41,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97941289] [2020-09-25 14:42:41,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:41,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:41,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234810347] [2020-09-25 14:42:41,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:41,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:41,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:41,623 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 14:42:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:44,677 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 14:42:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:44,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 14:42:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:44,699 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 14:42:44,699 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 14:42:44,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:42:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 14:42:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1517. [2020-09-25 14:42:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-09-25 14:42:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2050 transitions. [2020-09-25 14:42:44,801 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2050 transitions. Word has length 162 [2020-09-25 14:42:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:44,804 INFO L479 AbstractCegarLoop]: Abstraction has 1517 states and 2050 transitions. [2020-09-25 14:42:44,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2050 transitions. [2020-09-25 14:42:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:42:44,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:44,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:44,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:44,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -594506206, now seen corresponding path program 1 times [2020-09-25 14:42:44,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:44,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820033157] [2020-09-25 14:42:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:42:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:42:49,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:49,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 14:42:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:49,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:49,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:50,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:42:50,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 14:42:50,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:42:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:50,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820033157] [2020-09-25 14:42:50,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:50,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:50,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551397007] [2020-09-25 14:42:50,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:50,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:50,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:50,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:50,196 INFO L87 Difference]: Start difference. First operand 1517 states and 2050 transitions. Second operand 5 states. [2020-09-25 14:42:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:52,046 INFO L93 Difference]: Finished difference Result 3945 states and 5503 transitions. [2020-09-25 14:42:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:42:52,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 14:42:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:52,062 INFO L225 Difference]: With dead ends: 3945 [2020-09-25 14:42:52,062 INFO L226 Difference]: Without dead ends: 2443 [2020-09-25 14:42:52,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2020-09-25 14:42:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2433. [2020-09-25 14:42:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2433 states. [2020-09-25 14:42:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 3170 transitions. [2020-09-25 14:42:52,147 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 3170 transitions. Word has length 165 [2020-09-25 14:42:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:52,147 INFO L479 AbstractCegarLoop]: Abstraction has 2433 states and 3170 transitions. [2020-09-25 14:42:52,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 3170 transitions. [2020-09-25 14:42:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 14:42:52,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:52,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:52,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:52,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:52,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:52,155 INFO L82 PathProgramCache]: Analyzing trace with hash -407654397, now seen corresponding path program 1 times [2020-09-25 14:42:52,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:52,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119108722] [2020-09-25 14:42:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 14:42:57,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:42:57,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 14:42:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:42:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:57,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:57,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:42:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 14:42:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:57,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:42:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:57,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119108722] [2020-09-25 14:42:57,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:57,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:57,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948223506] [2020-09-25 14:42:57,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:57,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:57,751 INFO L87 Difference]: Start difference. First operand 2433 states and 3170 transitions. Second operand 7 states. [2020-09-25 14:42:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:59,801 INFO L93 Difference]: Finished difference Result 5875 states and 7790 transitions. [2020-09-25 14:42:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:59,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-09-25 14:42:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:59,821 INFO L225 Difference]: With dead ends: 5875 [2020-09-25 14:42:59,821 INFO L226 Difference]: Without dead ends: 3457 [2020-09-25 14:42:59,830 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 14:42:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-09-25 14:42:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2931. [2020-09-25 14:42:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2931 states. [2020-09-25 14:42:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3691 transitions. [2020-09-25 14:42:59,919 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3691 transitions. Word has length 219 [2020-09-25 14:42:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:59,920 INFO L479 AbstractCegarLoop]: Abstraction has 2931 states and 3691 transitions. [2020-09-25 14:42:59,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3691 transitions. [2020-09-25 14:42:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 14:42:59,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:59,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:59,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:59,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 14:42:59,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:59,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174236770] [2020-09-25 14:42:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 14:43:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:43:04,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:04,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:43:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:43:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:05,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 14:43:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:43:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 14:43:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:43:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:43:05,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174236770] [2020-09-25 14:43:05,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:05,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:05,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914932537] [2020-09-25 14:43:05,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:05,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:05,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:05,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:05,775 INFO L87 Difference]: Start difference. First operand 2931 states and 3691 transitions. Second operand 8 states. [2020-09-25 14:43:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:09,659 INFO L93 Difference]: Finished difference Result 6970 states and 9085 transitions. [2020-09-25 14:43:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:09,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-09-25 14:43:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:09,680 INFO L225 Difference]: With dead ends: 6970 [2020-09-25 14:43:09,680 INFO L226 Difference]: Without dead ends: 4035 [2020-09-25 14:43:09,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2020-09-25 14:43:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3702. [2020-09-25 14:43:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3702 states. [2020-09-25 14:43:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4661 transitions. [2020-09-25 14:43:09,810 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4661 transitions. Word has length 245 [2020-09-25 14:43:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:09,811 INFO L479 AbstractCegarLoop]: Abstraction has 3702 states and 4661 transitions. [2020-09-25 14:43:09,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4661 transitions. [2020-09-25 14:43:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 14:43:09,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:09,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:09,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:09,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 228218457, now seen corresponding path program 1 times [2020-09-25 14:43:09,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:09,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280028758] [2020-09-25 14:43:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 14:43:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:43:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:14,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 14:43:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:14,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:14,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 117 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:15,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280028758] [2020-09-25 14:43:15,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:15,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:15,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869667840] [2020-09-25 14:43:15,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:15,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:15,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:15,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:15,328 INFO L87 Difference]: Start difference. First operand 3702 states and 4661 transitions. Second operand 9 states.